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Use size_t rather than bfd_size_type
[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
6f2750fe 2 Copyright (C) 1993-2016 Free Software Foundation, Inc.
252b5132 3
571fe01f 4 This file is part of BFD, the Binary File Descriptor library.
252b5132 5
571fe01f
NC		 6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
571fe01f 9 (at your option) any later version.
252b5132 10
571fe01f
NC		 11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
252b5132 15
571fe01f
NC		 16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
cd123cb7
NC		 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
252b5132 20
252b5132 21#include "sysdep.h"
3db64b00 22#include "bfd.h"
252b5132
RH		 23#include "bfdlink.h"
24#include "libbfd.h"
25#include "elf-bfd.h"
5a68afcf 26#include "elf-nacl.h"
eac338cf 27#include "elf-vxworks.h"
142411ca 28#include "bfd_stdint.h"
c25bc9fc
L		 29#include "objalloc.h"
30#include "hashtab.h"
e41b3a13 31#include "dwarf2.h"
02a86693 32#include "opcode/i386.h"
252b5132 33
55fd94b0
AM		 34/* 386 uses REL relocations instead of RELA. */
35#define USE_REL 1
252b5132
RH		 36
37#include "elf/i386.h"
38
39static reloc_howto_type elf_howto_table[]=
40{
6346d5ca 41 HOWTO(R_386_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
1b452ec6 42 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 43 TRUE, 0x00000000, 0x00000000, FALSE),
44 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 45 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 46 TRUE, 0xffffffff, 0xffffffff, FALSE),
47 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 48 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 49 TRUE, 0xffffffff, 0xffffffff, TRUE),
50 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 51 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 52 TRUE, 0xffffffff, 0xffffffff, FALSE),
53 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 54 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 55 TRUE, 0xffffffff, 0xffffffff, TRUE),
56 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 57 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 58 TRUE, 0xffffffff, 0xffffffff, FALSE),
59 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 60 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 61 TRUE, 0xffffffff, 0xffffffff, FALSE),
62 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 63 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 64 TRUE, 0xffffffff, 0xffffffff, FALSE),
65 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 66 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 67 TRUE, 0xffffffff, 0xffffffff, FALSE),
68 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 69 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 70 TRUE, 0xffffffff, 0xffffffff, FALSE),
71 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 72 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 73 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 74
dc47f327
AM		 75 /* We have a gap in the reloc numbers here.
76 R_386_standard counts the number up to this point, and
77 R_386_ext_offset is the value to subtract from a reloc type of
78 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 79#define R_386_standard (R_386_GOTPC + 1)
80#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 81
37e55690 82 /* These relocs are a GNU extension. */
b34976b6 83 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 84 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 85 TRUE, 0xffffffff, 0xffffffff, FALSE),
86 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 87 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 88 TRUE, 0xffffffff, 0xffffffff, FALSE),
89 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 90 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 91 TRUE, 0xffffffff, 0xffffffff, FALSE),
92 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 93 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 94 TRUE, 0xffffffff, 0xffffffff, FALSE),
95 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 96 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 97 TRUE, 0xffffffff, 0xffffffff, FALSE),
98 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 99 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 100 TRUE, 0xffffffff, 0xffffffff, FALSE),
101 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 102 bfd_elf_generic_reloc, "R_386_16",
b34976b6 103 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 104 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 105 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 106 TRUE, 0xffff, 0xffff, TRUE),
107 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 108 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 109 TRUE, 0xff, 0xff, FALSE),
110 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 111 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 112 TRUE, 0xff, 0xff, TRUE),
dc47f327 113
55fd94b0
AM		 114#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
115#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 116 /* These are common with Solaris TLS implementation. */
b34976b6 117 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 118 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 119 TRUE, 0xffffffff, 0xffffffff, FALSE),
120 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 121 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 122 TRUE, 0xffffffff, 0xffffffff, FALSE),
123 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 124 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 125 TRUE, 0xffffffff, 0xffffffff, FALSE),
126 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 127 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 128 TRUE, 0xffffffff, 0xffffffff, FALSE),
129 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 130 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 131 TRUE, 0xffffffff, 0xffffffff, FALSE),
132 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 133 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 134 TRUE, 0xffffffff, 0xffffffff, FALSE),
1788fc08
L		 135 HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
136 bfd_elf_generic_reloc, "R_386_SIZE32",
137 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 138 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
139 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
140 TRUE, 0xffffffff, 0xffffffff, FALSE),
141 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
142 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
143 FALSE, 0, 0, FALSE),
144 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_386_TLS_DESC",
146 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 147 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_386_IRELATIVE",
149 TRUE, 0xffffffff, 0xffffffff, FALSE),
02a86693
L		 150 HOWTO(R_386_GOT32X, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_386_GOT32X",
152 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 153
154 /* Another gap. */
02a86693 155#define R_386_ext2 (R_386_GOT32X + 1 - R_386_tls_offset)
c74be520 156#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_ext2)
252b5132
RH		 157
158/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 159 HOWTO (R_386_GNU_VTINHERIT, /* type */
160 0, /* rightshift */
161 2, /* size (0 = byte, 1 = short, 2 = long) */
162 0, /* bitsize */
b34976b6 163 FALSE, /* pc_relative */
252b5132
RH		 164 0, /* bitpos */
165 complain_overflow_dont, /* complain_on_overflow */
166 NULL, /* special_function */
167 "R_386_GNU_VTINHERIT", /* name */
b34976b6 168 FALSE, /* partial_inplace */
252b5132
RH		 169 0, /* src_mask */
170 0, /* dst_mask */
b34976b6 171 FALSE), /* pcrel_offset */
252b5132
RH		 172
173/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 174 HOWTO (R_386_GNU_VTENTRY, /* type */
175 0, /* rightshift */
176 2, /* size (0 = byte, 1 = short, 2 = long) */
177 0, /* bitsize */
b34976b6 178 FALSE, /* pc_relative */
252b5132
RH		 179 0, /* bitpos */
180 complain_overflow_dont, /* complain_on_overflow */
181 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
182 "R_386_GNU_VTENTRY", /* name */
b34976b6 183 FALSE, /* partial_inplace */
252b5132
RH		 184 0, /* src_mask */
185 0, /* dst_mask */
b34976b6 186 FALSE) /* pcrel_offset */
dc47f327 187
55fd94b0 188#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 189
190};
191
252b5132 192#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 193#define TRACE(str) \
194 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 195#else
196#define TRACE(str)
197#endif
198
199static reloc_howto_type *
55fd94b0
AM		 200elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
201 bfd_reloc_code_real_type code)
252b5132
RH		 202{
203 switch (code)
204 {
205 case BFD_RELOC_NONE:
206 TRACE ("BFD_RELOC_NONE");
55fd94b0 207 return &elf_howto_table[R_386_NONE];
252b5132
RH		 208
209 case BFD_RELOC_32:
210 TRACE ("BFD_RELOC_32");
55fd94b0 211 return &elf_howto_table[R_386_32];
252b5132
RH		 212
213 case BFD_RELOC_CTOR:
214 TRACE ("BFD_RELOC_CTOR");
55fd94b0 215 return &elf_howto_table[R_386_32];
252b5132
RH		 216
217 case BFD_RELOC_32_PCREL:
218 TRACE ("BFD_RELOC_PC32");
55fd94b0 219 return &elf_howto_table[R_386_PC32];
252b5132
RH		 220
221 case BFD_RELOC_386_GOT32:
222 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 223 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 224
225 case BFD_RELOC_386_PLT32:
226 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 227 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 228
229 case BFD_RELOC_386_COPY:
230 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 231 return &elf_howto_table[R_386_COPY];
252b5132
RH		 232
233 case BFD_RELOC_386_GLOB_DAT:
234 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 235 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 236
237 case BFD_RELOC_386_JUMP_SLOT:
238 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 239 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 240
241 case BFD_RELOC_386_RELATIVE:
242 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 243 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 244
245 case BFD_RELOC_386_GOTOFF:
246 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 247 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 248
249 case BFD_RELOC_386_GOTPC:
250 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 251 return &elf_howto_table[R_386_GOTPC];
252b5132 252
37e55690
JJ		 253 /* These relocs are a GNU extension. */
254 case BFD_RELOC_386_TLS_TPOFF:
255 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 256 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 257
258 case BFD_RELOC_386_TLS_IE:
259 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 260 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 261
262 case BFD_RELOC_386_TLS_GOTIE:
263 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 264 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 265
13ae64f3
JJ		 266 case BFD_RELOC_386_TLS_LE:
267 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 268 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 269
270 case BFD_RELOC_386_TLS_GD:
271 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 272 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 273
274 case BFD_RELOC_386_TLS_LDM:
275 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 276 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 277
252b5132
RH		 278 case BFD_RELOC_16:
279 TRACE ("BFD_RELOC_16");
55fd94b0 280 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 281
282 case BFD_RELOC_16_PCREL:
283 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 284 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 285
286 case BFD_RELOC_8:
287 TRACE ("BFD_RELOC_8");
55fd94b0 288 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 289
290 case BFD_RELOC_8_PCREL:
291 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 292 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 293
13ae64f3
JJ		 294 /* Common with Sun TLS implementation. */
295 case BFD_RELOC_386_TLS_LDO_32:
296 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 297 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 298
299 case BFD_RELOC_386_TLS_IE_32:
300 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 301 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 302
303 case BFD_RELOC_386_TLS_LE_32:
304 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 305 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 306
307 case BFD_RELOC_386_TLS_DTPMOD32:
308 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 309 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 310
311 case BFD_RELOC_386_TLS_DTPOFF32:
312 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 313 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 314
315 case BFD_RELOC_386_TLS_TPOFF32:
316 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 317 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 318
1788fc08
L		 319 case BFD_RELOC_SIZE32:
320 TRACE ("BFD_RELOC_SIZE32");
321 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
322
67a4f2b7
AO		 323 case BFD_RELOC_386_TLS_GOTDESC:
324 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
325 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
326
327 case BFD_RELOC_386_TLS_DESC_CALL:
328 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
329 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
330
331 case BFD_RELOC_386_TLS_DESC:
332 TRACE ("BFD_RELOC_386_TLS_DESC");
333 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
334
cbe950e9
L		 335 case BFD_RELOC_386_IRELATIVE:
336 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 337 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 338
02a86693
L		 339 case BFD_RELOC_386_GOT32X:
340 TRACE ("BFD_RELOC_386_GOT32X");
341 return &elf_howto_table[R_386_GOT32X - R_386_tls_offset];
342
252b5132
RH		 343 case BFD_RELOC_VTABLE_INHERIT:
344 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 345 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 346
347 case BFD_RELOC_VTABLE_ENTRY:
348 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 349 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 350
351 default:
352 break;
353 }
354
355 TRACE ("Unknown");
356 return 0;
357}
358
157090f7
AM		 359static reloc_howto_type *
360elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
361 const char *r_name)
362{
363 unsigned int i;
364
365 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
366 if (elf_howto_table[i].name != NULL
367 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
368 return &elf_howto_table[i];
369
370 return NULL;
371}
372
142411ca
L		 373static reloc_howto_type *
374elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 375{
dc47f327
AM		 376 unsigned int indx;
377
378 if ((indx = r_type) >= R_386_standard
379 && ((indx = r_type - R_386_ext_offset) - R_386_standard
380 >= R_386_ext - R_386_standard)
13ae64f3 381 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520
L		 382 >= R_386_ext2 - R_386_ext)
383 && ((indx = r_type - R_386_vt_offset) - R_386_ext2
384 >= R_386_vt - R_386_ext2))
252b5132 385 {
d003868e
AM		 386 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
387 abfd, (int) r_type);
55fd94b0 388 indx = R_386_NONE;
252b5132 389 }
06614111
NC		 390 /* PR 17512: file: 0f67f69d. */
391 if (elf_howto_table [indx].type != r_type)
392 return NULL;
142411ca
L		 393 return &elf_howto_table[indx];
394}
395
396static void
397elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
398 arelent *cache_ptr,
399 Elf_Internal_Rela *dst)
400{
401 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
402 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 403}
404
405/* Return whether a symbol name implies a local label. The UnixWare
406 2.1 cc generates temporary symbols that start with .X, so we
407 recognize them here. FIXME: do other SVR4 compilers also use .X?.
408 If so, we should move the .X recognition into
409 _bfd_elf_is_local_label_name. */
410
b34976b6 411static bfd_boolean
55fd94b0 412elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 413{
414 if (name[0] == '.' && name[1] == 'X')
b34976b6 415 return TRUE;
252b5132
RH		 416
417 return _bfd_elf_is_local_label_name (abfd, name);
418}
419\f
38701953 420/* Support for core dump NOTE sections. */
61adc1a4 421
b34976b6 422static bfd_boolean
55fd94b0 423elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 424{
425 int offset;
eea6121a 426 size_t size;
38701953 427
61adc1a4 428 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 429 {
61adc1a4
NC		 430 int pr_version = bfd_get_32 (abfd, note->descdata);
431
432 if (pr_version != 1)
433 return FALSE;
434
435 /* pr_cursig */
228e534f 436 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC		 437
438 /* pr_pid */
228e534f 439 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 440
441 /* pr_reg */
442 offset = 28;
eea6121a 443 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 444 }
445 else
446 {
447 switch (note->descsz)
448 {
449 default:
450 return FALSE;
38701953 451
61adc1a4
NC		 452 case 144: /* Linux/i386 */
453 /* pr_cursig */
228e534f 454 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 455
61adc1a4 456 /* pr_pid */
228e534f 457 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 458
61adc1a4
NC		 459 /* pr_reg */
460 offset = 72;
eea6121a 461 size = 68;
38701953 462
61adc1a4
NC		 463 break;
464 }
38701953
AM		 465 }
466
467 /* Make a ".reg/999" section. */
468 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 469 size, note->descpos + offset);
38701953
AM		 470}
471
b34976b6 472static bfd_boolean
55fd94b0 473elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 474{
61adc1a4 475 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 476 {
61adc1a4
NC		 477 int pr_version = bfd_get_32 (abfd, note->descdata);
478
479 if (pr_version != 1)
b34976b6 480 return FALSE;
38701953 481
228e534f 482 elf_tdata (abfd)->core->program
61adc1a4 483 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 484 elf_tdata (abfd)->core->command
61adc1a4
NC		 485 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
486 }
487 else
488 {
489 switch (note->descsz)
490 {
491 default:
492 return FALSE;
493
494 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 495 elf_tdata (abfd)->core->pid
261b8d08 496 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 497 elf_tdata (abfd)->core->program
61adc1a4 498 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 499 elf_tdata (abfd)->core->command
61adc1a4
NC		 500 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
501 }
38701953
AM		 502 }
503
504 /* Note that for some reason, a spurious space is tacked
505 onto the end of the args in some (at least one anyway)
506 implementations, so strip it off if it exists. */
38701953 507 {
228e534f 508 char *command = elf_tdata (abfd)->core->command;
38701953
AM		 509 int n = strlen (command);
510
511 if (0 < n && command[n - 1] == ' ')
512 command[n - 1] = '\0';
513 }
514
b34976b6 515 return TRUE;
38701953
AM		 516}
517\f
518/* Functions for the i386 ELF linker.
519
520 In order to gain some understanding of code in this file without
521 knowing all the intricate details of the linker, note the
522 following:
523
524 Functions named elf_i386_* are called by external routines, other
525 functions are only called locally. elf_i386_* functions appear
526 in this file more or less in the order in which they are called
527 from external routines. eg. elf_i386_check_relocs is called
528 early in the link process, elf_i386_finish_dynamic_sections is
529 one of the last functions. */
530
252b5132
RH		 531
532/* The name of the dynamic interpreter. This is put in the .interp
533 section. */
534
535#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
536
a23b6845
AM		 537/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
538 copying dynamic variables from a shared lib into an app's dynbss
539 section, and instead use a dynamic relocation to point into the
540 shared lib. */
541#define ELIMINATE_COPY_RELOCS 1
542
252b5132
RH		 543/* The size in bytes of an entry in the procedure linkage table. */
544
545#define PLT_ENTRY_SIZE 16
546
547/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 548 this. See the SVR4 ABI i386 supplement to see how this works.
549 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 550
eac338cf 551static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 552{
553 0xff, 0x35, /* pushl contents of address */
554 0, 0, 0, 0, /* replaced with address of .got + 4. */
555 0xff, 0x25, /* jmp indirect */
eac338cf 556 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 557};
558
559/* Subsequent entries in an absolute procedure linkage table look like
560 this. */
561
562static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
563{
564 0xff, 0x25, /* jmp indirect */
565 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
566 0x68, /* pushl immediate */
567 0, 0, 0, 0, /* replaced with offset into relocation table. */
568 0xe9, /* jmp relative */
569 0, 0, 0, 0 /* replaced with offset to start of .plt. */
570};
571
eac338cf
PB		 572/* The first entry in a PIC procedure linkage table look like this.
573 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 574
eac338cf 575static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 576{
577 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 578 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 579};
580
581/* Subsequent entries in a PIC procedure linkage table look like this. */
582
583static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
584{
585 0xff, 0xa3, /* jmp *offset(%ebx) */
586 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
587 0x68, /* pushl immediate */
588 0, 0, 0, 0, /* replaced with offset into relocation table. */
589 0xe9, /* jmp relative */
590 0, 0, 0, 0 /* replaced with offset to start of .plt. */
591};
592
dd7e64d4
L		 593/* Entries in the GOT procedure linkage table look like this. */
594
595static const bfd_byte elf_i386_got_plt_entry[8] =
596{
597 0xff, 0x25, /* jmp indirect */
598 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
599 0x66, 0x90 /* xchg %ax,%ax */
600};
601
602/* Entries in the PIC GOT procedure linkage table look like this. */
603
604static const bfd_byte elf_i386_pic_got_plt_entry[8] =
605{
606 0xff, 0xa3, /* jmp *offset(%ebx) */
607 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
608 0x66, 0x90 /* xchg %ax,%ax */
609};
610
e41b3a13
JJ		 611/* .eh_frame covering the .plt section. */
612
613static const bfd_byte elf_i386_eh_frame_plt[] =
614{
615#define PLT_CIE_LENGTH 20
616#define PLT_FDE_LENGTH 36
617#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
618#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
619 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
620 0, 0, 0, 0, /* CIE ID */
621 1, /* CIE version */
622 'z', 'R', 0, /* Augmentation string */
623 1, /* Code alignment factor */
624 0x7c, /* Data alignment factor */
625 8, /* Return address column */
626 1, /* Augmentation size */
627 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
628 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
629 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
630 DW_CFA_nop, DW_CFA_nop,
631
632 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
633 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
634 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
635 0, 0, 0, 0, /* .plt size goes here */
636 0, /* Augmentation size */
637 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
638 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
639 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
640 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
641 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
642 11, /* Block length */
643 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
644 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
645 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 646 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 647 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
648};
649
25e762b9
RM		 650struct elf_i386_plt_layout
651{
652 /* The first entry in an absolute procedure linkage table looks like this. */
653 const bfd_byte *plt0_entry;
654 unsigned int plt0_entry_size;
655
656 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
657 unsigned int plt0_got1_offset;
658 unsigned int plt0_got2_offset;
659
660 /* Later entries in an absolute procedure linkage table look like this. */
661 const bfd_byte *plt_entry;
662 unsigned int plt_entry_size;
663
664 /* Offsets into plt_entry that are to be replaced with... */
665 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
666 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
667 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
668
669 /* Offset into plt_entry where the initial value of the GOT entry points. */
670 unsigned int plt_lazy_offset;
671
672 /* The first entry in a PIC procedure linkage table looks like this. */
673 const bfd_byte *pic_plt0_entry;
674
675 /* Subsequent entries in a PIC procedure linkage table look like this. */
676 const bfd_byte *pic_plt_entry;
677
678 /* .eh_frame covering the .plt section. */
679 const bfd_byte *eh_frame_plt;
680 unsigned int eh_frame_plt_size;
681};
682
683#define GET_PLT_ENTRY_SIZE(abfd) \
684 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
685
686/* These are the standard parameters. */
687static const struct elf_i386_plt_layout elf_i386_plt =
688 {
689 elf_i386_plt0_entry, /* plt0_entry */
690 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
691 2, /* plt0_got1_offset */
692 8, /* plt0_got2_offset */
693 elf_i386_plt_entry, /* plt_entry */
694 PLT_ENTRY_SIZE, /* plt_entry_size */
695 2, /* plt_got_offset */
696 7, /* plt_reloc_offset */
697 12, /* plt_plt_offset */
698 6, /* plt_lazy_offset */
699 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
700 elf_i386_pic_plt_entry, /* pic_plt_entry */
701 elf_i386_eh_frame_plt, /* eh_frame_plt */
702 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
703 };
704\f
705
eac338cf
PB		 706/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
707 for the PLTResolve stub and then for each PLT entry. */
708#define PLTRESOLVE_RELOCS_SHLIB 0
709#define PLTRESOLVE_RELOCS 2
710#define PLT_NON_JUMP_SLOT_RELOCS 2
711
23209a78
RM		 712/* Architecture-specific backend data for i386. */
713
714struct elf_i386_backend_data
715{
25e762b9
RM		 716 /* Parameters describing PLT generation. */
717 const struct elf_i386_plt_layout *plt;
718
23209a78
RM		 719 /* Value used to fill the unused bytes of the first PLT entry. */
720 bfd_byte plt0_pad_byte;
721
722 /* True if the target system is VxWorks. */
723 int is_vxworks;
724};
725
726#define get_elf_i386_backend_data(abfd) \
727 ((const struct elf_i386_backend_data *) \
728 get_elf_backend_data (abfd)->arch_data)
729
730/* These are the standard parameters. */
731static const struct elf_i386_backend_data elf_i386_arch_bed =
732 {
25e762b9 733 &elf_i386_plt, /* plt */
23209a78
RM		 734 0, /* plt0_pad_byte */
735 0, /* is_vxworks */
736 };
737
738#define elf_backend_arch_data &elf_i386_arch_bed
739
aec6b87e
L		 740/* Is a undefined weak symbol which is resolved to 0. Reference to an
741 undefined weak symbol is resolved to 0 when building executable if
742 it isn't dynamic and
743 1. Has non-GOT/non-PLT relocations in text section. Or
744 2. Has no GOT/PLT relocation.
745 */
e62b9723 746#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, GOT_RELOC, EH) \
aec6b87e
L		 747 ((EH)->elf.root.type == bfd_link_hash_undefweak \
748 && bfd_link_executable (INFO) \
749 && (elf_i386_hash_table (INFO)->interp == NULL \
e62b9723 750 || !(GOT_RELOC) \
aec6b87e
L		 751 || (EH)->has_non_got_reloc \
752 || !(INFO)->dynamic_undefined_weak))
753
252b5132
RH		 754/* i386 ELF linker hash entry. */
755
756struct elf_i386_link_hash_entry
757{
ebe50bae 758 struct elf_link_hash_entry elf;
252b5132 759
0c715baa 760 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 761 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 762
37e55690
JJ		 763#define GOT_UNKNOWN 0
764#define GOT_NORMAL 1
765#define GOT_TLS_GD 2
766#define GOT_TLS_IE 4
767#define GOT_TLS_IE_POS 5
768#define GOT_TLS_IE_NEG 6
769#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 770#define GOT_TLS_GDESC 8
771#define GOT_TLS_GD_BOTH_P(type) \
772 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
773#define GOT_TLS_GD_P(type) \
774 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
775#define GOT_TLS_GDESC_P(type) \
776 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
777#define GOT_TLS_GD_ANY_P(type) \
778 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 779 unsigned char tls_type;
67a4f2b7 780
d5597ebc
L		 781 /* Symbol is referenced by R_386_GOTOFF relocation. */
782 unsigned int gotoff_ref : 1;
783
aec6b87e
L		 784 /* Symbol has GOT or PLT relocations. */
785 unsigned int has_got_reloc : 1;
786
787 /* Symbol has non-GOT/non-PLT relocations in text sections. */
788 unsigned int has_non_got_reloc : 1;
789
6eaa7fb5
L		 790 /* 0: symbol isn't ___tls_get_addr.
791 1: symbol is ___tls_get_addr.
792 2: symbol is unknown. */
793 unsigned int tls_get_addr : 2;
794
04ebc307
L		 795 /* Reference count of C/C++ function pointer relocations in read-write
796 section which can be resolved at run-time. */
797 bfd_signed_vma func_pointer_refcount;
798
dd7e64d4
L		 799 /* Information about the GOT PLT entry. Filled when there are both
800 GOT and PLT relocations against the same function. */
801 union gotplt_union plt_got;
802
67a4f2b7
AO		 803 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
804 starting at the end of the jump table. */
805 bfd_vma tlsdesc_got;
13ae64f3
JJ		 806};
807
808#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
809
810struct elf_i386_obj_tdata
811{
812 struct elf_obj_tdata root;
813
814 /* tls_type for each local got entry. */
815 char *local_got_tls_type;
67a4f2b7
AO		 816
817 /* GOTPLT entries for TLS descriptors. */
818 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 819};
820
13ae64f3
JJ		 821#define elf_i386_tdata(abfd) \
822 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
823
824#define elf_i386_local_got_tls_type(abfd) \
825 (elf_i386_tdata (abfd)->local_got_tls_type)
826
67a4f2b7
AO		 827#define elf_i386_local_tlsdesc_gotent(abfd) \
828 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
829
0ffa91dd
NC		 830#define is_i386_elf(bfd) \
831 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
832 && elf_tdata (bfd) != NULL \
4dfe6ac6 833 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 834
b34976b6 835static bfd_boolean
55fd94b0 836elf_i386_mkobject (bfd *abfd)
13ae64f3 837{
0ffa91dd 838 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 839 I386_ELF_DATA);
13ae64f3 840}
cedb70c5 841
252b5132
RH		 842/* i386 ELF linker hash table. */
843
844struct elf_i386_link_hash_table
845{
ebe50bae 846 struct elf_link_hash_table elf;
252b5132 847
6725bdbf 848 /* Short-cuts to get to dynamic linker sections. */
aec6b87e 849 asection *interp;
6725bdbf
AM		 850 asection *sdynbss;
851 asection *srelbss;
e41b3a13 852 asection *plt_eh_frame;
dd7e64d4 853 asection *plt_got;
9635fe29 854
4dfe6ac6
NC		 855 union
856 {
13ae64f3
JJ		 857 bfd_signed_vma refcount;
858 bfd_vma offset;
859 } tls_ldm_got;
860
67a4f2b7
AO		 861 /* The amount of space used by the reserved portion of the sgotplt
862 section, plus whatever space is used by the jump slots. */
863 bfd_vma sgotplt_jump_table_size;
864
87d72d41
AM		 865 /* Small local sym cache. */
866 struct sym_cache sym_cache;
9f03412a
AO		 867
868 /* _TLS_MODULE_BASE_ symbol. */
869 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 870
871 /* Used by local STT_GNU_IFUNC symbols. */
872 htab_t loc_hash_table;
4dfe6ac6
NC		 873 void * loc_hash_memory;
874
875 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
876 asection *srelplt2;
877
4dfe6ac6
NC		 878 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
879 bfd_vma next_tls_desc_index;
e1f98742
L		 880
881 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
882 bfd_vma next_jump_slot_index;
883
884 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
885 bfd_vma next_irelative_index;
2df3368d
L		 886
887 /* TRUE if there are dynamic relocs against IFUNC symbols that apply
888 to read-only sections. */
889 bfd_boolean readonly_dynrelocs_against_ifunc;
6725bdbf 890};
252b5132
RH		 891
892/* Get the i386 ELF linker hash table from a link_info structure. */
893
894#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 895 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
896 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 897
67a4f2b7 898#define elf_i386_compute_jump_table_size(htab) \
998d811a 899 ((htab)->elf.srelplt->reloc_count * 4)
67a4f2b7 900
252b5132
RH		 901/* Create an entry in an i386 ELF linker hash table. */
902
903static struct bfd_hash_entry *
eb4ff4d6
L		 904elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
905 struct bfd_hash_table *table,
906 const char *string)
252b5132 907{
252b5132
RH		 908 /* Allocate the structure if it has not already been allocated by a
909 subclass. */
ebe50bae
AM		 910 if (entry == NULL)
911 {
a50b1753
NC		 912 entry = (struct bfd_hash_entry *)
913 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 914 if (entry == NULL)
915 return entry;
916 }
252b5132
RH		 917
918 /* Call the allocation method of the superclass. */
ebe50bae
AM		 919 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
920 if (entry != NULL)
252b5132 921 {
ebe50bae
AM		 922 struct elf_i386_link_hash_entry *eh;
923
924 eh = (struct elf_i386_link_hash_entry *) entry;
925 eh->dyn_relocs = NULL;
13ae64f3 926 eh->tls_type = GOT_UNKNOWN;
d5597ebc 927 eh->gotoff_ref = 0;
aec6b87e
L		 928 eh->has_got_reloc = 0;
929 eh->has_non_got_reloc = 0;
6eaa7fb5 930 eh->tls_get_addr = 2;
04ebc307 931 eh->func_pointer_refcount = 0;
dd7e64d4 932 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 933 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 934 }
935
ebe50bae 936 return entry;
252b5132
RH		 937}
938
c25bc9fc
L		 939/* Compute a hash of a local hash entry. We use elf_link_hash_entry
940 for local symbol so that we can handle local STT_GNU_IFUNC symbols
941 as global symbol. We reuse indx and dynstr_index for local symbol
942 hash since they aren't used by global symbols in this backend. */
943
944static hashval_t
945elf_i386_local_htab_hash (const void *ptr)
946{
947 struct elf_link_hash_entry *h
948 = (struct elf_link_hash_entry *) ptr;
d2149d72 949 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 950}
951
952/* Compare local hash entries. */
953
954static int
955elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
956{
957 struct elf_link_hash_entry *h1
958 = (struct elf_link_hash_entry *) ptr1;
959 struct elf_link_hash_entry *h2
960 = (struct elf_link_hash_entry *) ptr2;
961
962 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
963}
964
965/* Find and/or create a hash entry for local symbol. */
966
967static struct elf_link_hash_entry *
968elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
969 bfd *abfd, const Elf_Internal_Rela *rel,
970 bfd_boolean create)
971{
972 struct elf_i386_link_hash_entry e, *ret;
973 asection *sec = abfd->sections;
d2149d72
L		 974 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
975 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 976 void **slot;
977
978 e.elf.indx = sec->id;
979 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
980 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
981 create ? INSERT : NO_INSERT);
982
983 if (!slot)
984 return NULL;
985
986 if (*slot)
987 {
988 ret = (struct elf_i386_link_hash_entry *) *slot;
989 return &ret->elf;
990 }
991
992 ret = (struct elf_i386_link_hash_entry *)
993 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
994 sizeof (struct elf_i386_link_hash_entry));
995 if (ret)
996 {
997 memset (ret, 0, sizeof (*ret));
998 ret->elf.indx = sec->id;
999 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
1000 ret->elf.dynindx = -1;
04ebc307 1001 ret->func_pointer_refcount = 0;
dd7e64d4 1002 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L		 1003 *slot = ret;
1004 }
1005 return &ret->elf;
1006}
1007
68faa637
AM		 1008/* Destroy an i386 ELF linker hash table. */
1009
1010static void
d495ab0d 1011elf_i386_link_hash_table_free (bfd *obfd)
68faa637
AM		 1012{
1013 struct elf_i386_link_hash_table *htab
d495ab0d 1014 = (struct elf_i386_link_hash_table *) obfd->link.hash;
68faa637
AM		 1015
1016 if (htab->loc_hash_table)
1017 htab_delete (htab->loc_hash_table);
1018 if (htab->loc_hash_memory)
1019 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 1020 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 1021}
1022
252b5132
RH		 1023/* Create an i386 ELF linker hash table. */
1024
1025static struct bfd_link_hash_table *
55fd94b0 1026elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 1027{
1028 struct elf_i386_link_hash_table *ret;
dc810e39 1029 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 1030
7bf52ea2 1031 ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
ebe50bae 1032 if (ret == NULL)
252b5132
RH		 1033 return NULL;
1034
eb4ff4d6
L		 1035 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1036 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 1037 sizeof (struct elf_i386_link_hash_entry),
1038 I386_ELF_DATA))
252b5132 1039 {
e2d34d7d 1040 free (ret);
252b5132
RH		 1041 return NULL;
1042 }
1043
c25bc9fc
L		 1044 ret->loc_hash_table = htab_try_create (1024,
1045 elf_i386_local_htab_hash,
1046 elf_i386_local_htab_eq,
1047 NULL);
1048 ret->loc_hash_memory = objalloc_create ();
1049 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1050 {
d495ab0d 1051 elf_i386_link_hash_table_free (abfd);
c25bc9fc
L		 1052 return NULL;
1053 }
d495ab0d 1054 ret->elf.root.hash_table_free = elf_i386_link_hash_table_free;
c25bc9fc 1055
ebe50bae 1056 return &ret->elf.root;
252b5132
RH		 1057}
1058
6725bdbf
AM		 1059/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
1060 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
1061 hash table. */
1062
b34976b6 1063static bfd_boolean
55fd94b0 1064elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 1065{
1066 struct elf_i386_link_hash_table *htab;
1067
6725bdbf 1068 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1069 return FALSE;
6725bdbf 1070
6de2ae4a 1071 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1072 if (htab == NULL)
1073 return FALSE;
1074
493f652c
L		 1075 /* Set the contents of the .interp section to the interpreter. */
1076 if (bfd_link_executable (info) && !info->nointerp)
1077 {
1078 asection *s = bfd_get_linker_section (dynobj, ".interp");
1079 if (s == NULL)
1080 abort ();
1081 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1082 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1083 htab->interp = s;
1084 }
1085
3d4d4302 1086 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
d5597ebc 1087 if (!htab->sdynbss)
6725bdbf
AM		 1088 abort ();
1089
0e1862bb 1090 if (bfd_link_executable (info))
d5597ebc
L		 1091 {
1092 /* Always allow copy relocs for building executables. */
1093 asection *s = bfd_get_linker_section (dynobj, ".rel.bss");
1094 if (s == NULL)
1095 {
1096 const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
1097 s = bfd_make_section_anyway_with_flags (dynobj,
1098 ".rel.bss",
1099 (bed->dynamic_sec_flags
1100 | SEC_READONLY));
1101 if (s == NULL
1102 || ! bfd_set_section_alignment (dynobj, s,
1103 bed->s->log_file_align))
1104 return FALSE;
1105 }
1106 htab->srelbss = s;
1107 }
1108
23209a78 1109 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1110 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1111 &htab->srelplt2))
711de32c 1112 return FALSE;
eac338cf 1113
e41b3a13 1114 if (!info->no_ld_generated_unwind_info
2fe0fd06 1115 && htab->plt_eh_frame == NULL
e4de50d4 1116 && htab->elf.splt != NULL)
e41b3a13 1117 {
bbf96e4e
L		 1118 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1119 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1120 | SEC_LINKER_CREATED);
e41b3a13 1121 htab->plt_eh_frame
bbf96e4e 1122 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1123 if (htab->plt_eh_frame == NULL
1124 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1125 return FALSE;
e41b3a13
JJ		 1126 }
1127
b34976b6 1128 return TRUE;
6725bdbf
AM		 1129}
1130
ebe50bae
AM		 1131/* Copy the extra info we tack onto an elf_link_hash_entry. */
1132
51b64d56 1133static void
fcfa13d2 1134elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1135 struct elf_link_hash_entry *dir,
1136 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1137{
1138 struct elf_i386_link_hash_entry *edir, *eind;
1139
1140 edir = (struct elf_i386_link_hash_entry *) dir;
1141 eind = (struct elf_i386_link_hash_entry *) ind;
1142
bbd7ec4a 1143 if (eind->dyn_relocs != NULL)
ebe50bae 1144 {
bbd7ec4a
AM		 1145 if (edir->dyn_relocs != NULL)
1146 {
e03a8ed8
L		 1147 struct elf_dyn_relocs **pp;
1148 struct elf_dyn_relocs *p;
bbd7ec4a 1149
fcfa13d2 1150 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1151 list. Merge any entries against the same section. */
1152 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1153 {
e03a8ed8 1154 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1155
1156 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1157 if (q->sec == p->sec)
1158 {
1159 q->pc_count += p->pc_count;
1160 q->count += p->count;
1161 *pp = p->next;
1162 break;
1163 }
1164 if (q == NULL)
1165 pp = &p->next;
1166 }
1167 *pp = edir->dyn_relocs;
1168 }
1169
ebe50bae
AM		 1170 edir->dyn_relocs = eind->dyn_relocs;
1171 eind->dyn_relocs = NULL;
1172 }
ebe50bae 1173
cd67d266
JJ		 1174 if (ind->root.type == bfd_link_hash_indirect
1175 && dir->got.refcount <= 0)
1176 {
1177 edir->tls_type = eind->tls_type;
1178 eind->tls_type = GOT_UNKNOWN;
1179 }
81848ca0 1180
d5597ebc
L		 1181 /* Copy gotoff_ref so that elf_i386_adjust_dynamic_symbol will
1182 generate a R_386_COPY reloc. */
1183 edir->gotoff_ref |= eind->gotoff_ref;
1184
aec6b87e
L		 1185 edir->has_got_reloc |= eind->has_got_reloc;
1186 edir->has_non_got_reloc |= eind->has_non_got_reloc;
1187
81848ca0
AM		 1188 if (ELIMINATE_COPY_RELOCS
1189 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1190 && dir->dynamic_adjusted)
1191 {
1192 /* If called to transfer flags for a weakdef during processing
1193 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1194 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1195 dir->ref_dynamic |= ind->ref_dynamic;
1196 dir->ref_regular |= ind->ref_regular;
1197 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1198 dir->needs_plt |= ind->needs_plt;
1199 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1200 }
81848ca0 1201 else
04ebc307
L		 1202 {
1203 if (eind->func_pointer_refcount > 0)
1204 {
1205 edir->func_pointer_refcount += eind->func_pointer_refcount;
1206 eind->func_pointer_refcount = 0;
1207 }
1208
1209 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1210 }
ebe50bae
AM		 1211}
1212
142411ca
L		 1213/* Return TRUE if the TLS access code sequence support transition
1214 from R_TYPE. */
1215
1216static bfd_boolean
bedfd056 1217elf_i386_check_tls_transition (asection *sec,
142411ca
L		 1218 bfd_byte *contents,
1219 Elf_Internal_Shdr *symtab_hdr,
1220 struct elf_link_hash_entry **sym_hashes,
1221 unsigned int r_type,
1222 const Elf_Internal_Rela *rel,
1223 const Elf_Internal_Rela *relend)
13ae64f3 1224{
6eaa7fb5 1225 unsigned int val, type, reg;
142411ca
L		 1226 unsigned long r_symndx;
1227 struct elf_link_hash_entry *h;
1228 bfd_vma offset;
6eaa7fb5
L		 1229 bfd_byte *call;
1230 bfd_boolean indirect_call, tls_get_addr;
142411ca 1231
142411ca 1232 offset = rel->r_offset;
13ae64f3 1233 switch (r_type)
142411ca
L		 1234 {
1235 case R_386_TLS_GD:
1236 case R_386_TLS_LDM:
1237 if (offset < 2 || (rel + 1) >= relend)
1238 return FALSE;
1239
6eaa7fb5
L		 1240 indirect_call = FALSE;
1241 call = contents + offset + 4;
1242 val = *(call - 5);
1243 type = *(call - 6);
142411ca
L		 1244 if (r_type == R_386_TLS_GD)
1245 {
09e8c3bf 1246 /* Check transition from GD access model. Only
6eaa7fb5
L		 1247 leal foo@tlsgd(,%ebx,1), %eax
1248 call ___tls_get_addr@PLT
1249 or
1250 leal foo@tlsgd(%ebx) %eax
1251 call ___tls_get_addr@PLT
1252 nop
1253 or
1254 leal foo@tlsgd(%reg), %eax
1255 call *___tls_get_addr@GOT(%reg)
1256 which may be converted to
1257 addr32 call ___tls_get_addr
142411ca 1258 can transit to different access model. */
6eaa7fb5
L		 1259 if ((offset + 10) > sec->size
1260 || (type != 0x8d && type != 0x04))
142411ca
L		 1261 return FALSE;
1262
142411ca
L		 1263 if (type == 0x04)
1264 {
6eaa7fb5
L		 1265 /* leal foo@tlsgd(,%ebx,1), %eax
1266 call ___tls_get_addr@PLT */
142411ca
L		 1267 if (offset < 3)
1268 return FALSE;
1269
6eaa7fb5
L		 1270 if (*(call - 7) != 0x8d
1271 || val != 0x1d
1272 || call[0] != 0xe8)
142411ca
L		 1273 return FALSE;
1274 }
1275 else
1276 {
6eaa7fb5
L		 1277 /* This must be
1278 leal foo@tlsgd(%ebx), %eax
1279 call ___tls_get_addr@PLT
1280 nop
1281 or
1282 leal foo@tlsgd(%reg), %eax
1283 call *___tls_get_addr@GOT(%reg)
1284 which may be converted to
1285 addr32 call ___tls_get_addr
1286
1287 %eax can't be used as the GOT base register since it
1288 is used to pass parameter to ___tls_get_addr. */
1289 reg = val & 7;
1290 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca
L		 1291 return FALSE;
1292
6eaa7fb5
L		 1293 indirect_call = call[0] == 0xff;
1294 if (!(reg == 3 && call[0] == 0xe8 && call[5] == 0x90)
1295 && !(call[0] == 0x67 && call[1] == 0xe8)
1296 && !(indirect_call
1297 && (call[1] & 0xf8) == 0x90
1298 && (call[1] & 0x7) == reg))
142411ca
L		 1299 return FALSE;
1300 }
1301 }
1302 else
1303 {
1304 /* Check transition from LD access model. Only
6eaa7fb5
L		 1305 leal foo@tlsldm(%ebx), %eax
1306 call ___tls_get_addr@PLT
1307 or
1308 leal foo@tlsldm(%reg), %eax
1309 call *___tls_get_addr@GOT(%reg)
1310 which may be converted to
1311 addr32 call ___tls_get_addr
142411ca
L		 1312 can transit to different access model. */
1313 if (type != 0x8d || (offset + 9) > sec->size)
1314 return FALSE;
1315
6eaa7fb5
L		 1316 /* %eax can't be used as the GOT base register since it is
1317 used to pass parameter to ___tls_get_addr. */
1318 reg = val & 7;
1319 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca 1320 return FALSE;
142411ca 1321
6eaa7fb5
L		 1322 indirect_call = call[0] == 0xff;
1323 if (!(reg == 3 && call[0] == 0xe8)
1324 && !(call[0] == 0x67 && call[1] == 0xe8)
1325 && !(indirect_call
1326 && (call[1] & 0xf8) == 0x90
1327 && (call[1] & 0x7) == reg))
1328 return FALSE;
1329 }
142411ca
L		 1330
1331 r_symndx = ELF32_R_SYM (rel[1].r_info);
1332 if (r_symndx < symtab_hdr->sh_info)
1333 return FALSE;
1334
6eaa7fb5 1335 tls_get_addr = FALSE;
142411ca 1336 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6eaa7fb5
L		 1337 if (h != NULL && h->root.root.string != NULL)
1338 {
1339 struct elf_i386_link_hash_entry *eh
1340 = (struct elf_i386_link_hash_entry *) h;
1341 tls_get_addr = eh->tls_get_addr == 1;
1342 if (eh->tls_get_addr > 1)
1343 {
1344 /* Use strncmp to check ___tls_get_addr since
1345 ___tls_get_addr may be versioned. */
1346 if (strncmp (h->root.root.string, "___tls_get_addr", 15)
1347 == 0)
1348 {
1349 eh->tls_get_addr = 1;
1350 tls_get_addr = TRUE;
1351 }
1352 else
1353 eh->tls_get_addr = 0;
1354 }
1355 }
1356
1357 if (!tls_get_addr)
1358 return FALSE;
1359 else if (indirect_call)
1360 return (ELF32_R_TYPE (rel[1].r_info) == R_386_GOT32X);
1361 else
1362 return (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1363 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
142411ca
L		 1364
1365 case R_386_TLS_IE:
1366 /* Check transition from IE access model:
1367 movl foo@indntpoff(%rip), %eax
1368 movl foo@indntpoff(%rip), %reg
1369 addl foo@indntpoff(%rip), %reg
1370 */
1371
1372 if (offset < 1 || (offset + 4) > sec->size)
1373 return FALSE;
1374
1375 /* Check "movl foo@tpoff(%rip), %eax" first. */
1376 val = bfd_get_8 (abfd, contents + offset - 1);
1377 if (val == 0xa1)
1378 return TRUE;
1379
1380 if (offset < 2)
1381 return FALSE;
1382
1383 /* Check movl|addl foo@tpoff(%rip), %reg. */
1384 type = bfd_get_8 (abfd, contents + offset - 2);
1385 return ((type == 0x8b || type == 0x03)
1386 && (val & 0xc7) == 0x05);
1387
1388 case R_386_TLS_GOTIE:
1389 case R_386_TLS_IE_32:
1390 /* Check transition from {IE_32,GOTIE} access model:
1391 subl foo@{tpoff,gontoff}(%reg1), %reg2
1392 movl foo@{tpoff,gontoff}(%reg1), %reg2
1393 addl foo@{tpoff,gontoff}(%reg1), %reg2
1394 */
1395
1396 if (offset < 2 || (offset + 4) > sec->size)
1397 return FALSE;
1398
1399 val = bfd_get_8 (abfd, contents + offset - 1);
1400 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1401 return FALSE;
1402
1403 type = bfd_get_8 (abfd, contents + offset - 2);
1404 return type == 0x8b || type == 0x2b || type == 0x03;
1405
1406 case R_386_TLS_GOTDESC:
1407 /* Check transition from GDesc access model:
1408 leal x@tlsdesc(%ebx), %eax
1409
1410 Make sure it's a leal adding ebx to a 32-bit offset
1411 into any register, although it's probably almost always
1412 going to be eax. */
1413
1414 if (offset < 2 || (offset + 4) > sec->size)
1415 return FALSE;
1416
1417 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1418 return FALSE;
1419
1420 val = bfd_get_8 (abfd, contents + offset - 1);
1421 return (val & 0xc7) == 0x83;
1422
1423 case R_386_TLS_DESC_CALL:
1424 /* Check transition from GDesc access model:
6eaa7fb5 1425 call *x@tlsdesc(%eax)
142411ca
L		 1426 */
1427 if (offset + 2 <= sec->size)
1428 {
6eaa7fb5
L		 1429 /* Make sure that it's a call *x@tlsdesc(%eax). */
1430 call = contents + offset;
1431 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1432 }
1433
1434 return FALSE;
1435
1436 default:
1437 abort ();
1438 }
1439}
1440
1441/* Return TRUE if the TLS access transition is OK or no transition
1442 will be performed. Update R_TYPE if there is a transition. */
1443
1444static bfd_boolean
1445elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1446 asection *sec, bfd_byte *contents,
1447 Elf_Internal_Shdr *symtab_hdr,
1448 struct elf_link_hash_entry **sym_hashes,
1449 unsigned int *r_type, int tls_type,
1450 const Elf_Internal_Rela *rel,
1451 const Elf_Internal_Rela *relend,
4c544807 1452 struct elf_link_hash_entry *h,
bedfd056
L		 1453 unsigned long r_symndx,
1454 bfd_boolean from_relocate_section)
142411ca
L		 1455{
1456 unsigned int from_type = *r_type;
1457 unsigned int to_type = from_type;
1458 bfd_boolean check = TRUE;
1459
bb1cb422
L		 1460 /* Skip TLS transition for functions. */
1461 if (h != NULL
1462 && (h->type == STT_FUNC
1463 || h->type == STT_GNU_IFUNC))
1464 return TRUE;
1465
142411ca 1466 switch (from_type)
13ae64f3
JJ		 1467 {
1468 case R_386_TLS_GD:
67a4f2b7
AO		 1469 case R_386_TLS_GOTDESC:
1470 case R_386_TLS_DESC_CALL:
13ae64f3 1471 case R_386_TLS_IE_32:
37e55690
JJ		 1472 case R_386_TLS_IE:
1473 case R_386_TLS_GOTIE:
0e1862bb 1474 if (bfd_link_executable (info))
142411ca
L		 1475 {
1476 if (h == NULL)
1477 to_type = R_386_TLS_LE_32;
1478 else if (from_type != R_386_TLS_IE
1479 && from_type != R_386_TLS_GOTIE)
1480 to_type = R_386_TLS_IE_32;
1481 }
1482
bedfd056
L		 1483 /* When we are called from elf_i386_relocate_section, there may
1484 be additional transitions based on TLS_TYPE. */
1485 if (from_relocate_section)
142411ca
L		 1486 {
1487 unsigned int new_to_type = to_type;
1488
0e1862bb 1489 if (bfd_link_executable (info)
142411ca
L		 1490 && h != NULL
1491 && h->dynindx == -1
1492 && (tls_type & GOT_TLS_IE))
1493 new_to_type = R_386_TLS_LE_32;
1494
1495 if (to_type == R_386_TLS_GD
1496 || to_type == R_386_TLS_GOTDESC
1497 || to_type == R_386_TLS_DESC_CALL)
1498 {
1499 if (tls_type == GOT_TLS_IE_POS)
1500 new_to_type = R_386_TLS_GOTIE;
1501 else if (tls_type & GOT_TLS_IE)
1502 new_to_type = R_386_TLS_IE_32;
1503 }
1504
1505 /* We checked the transition before when we were called from
1506 elf_i386_check_relocs. We only want to check the new
1507 transition which hasn't been checked before. */
1508 check = new_to_type != to_type && from_type == to_type;
1509 to_type = new_to_type;
1510 }
1511
1512 break;
1513
13ae64f3 1514 case R_386_TLS_LDM:
0e1862bb 1515 if (bfd_link_executable (info))
142411ca
L		 1516 to_type = R_386_TLS_LE_32;
1517 break;
1518
1519 default:
1520 return TRUE;
1521 }
1522
1523 /* Return TRUE if there is no transition. */
1524 if (from_type == to_type)
1525 return TRUE;
1526
1527 /* Check if the transition can be performed. */
1528 if (check
bedfd056 1529 && ! elf_i386_check_tls_transition (sec, contents,
142411ca
L		 1530 symtab_hdr, sym_hashes,
1531 from_type, rel, relend))
1532 {
2f629d23 1533 reloc_howto_type *from, *to;
4c544807 1534 const char *name;
142411ca
L		 1535
1536 from = elf_i386_rtype_to_howto (abfd, from_type);
1537 to = elf_i386_rtype_to_howto (abfd, to_type);
1538
4c544807
L		 1539 if (h)
1540 name = h->root.root.string;
1541 else
1542 {
4c544807 1543 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1544
4c544807 1545 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1546 if (htab == NULL)
1547 name = "*unknown*";
1548 else
1549 {
1550 Elf_Internal_Sym *isym;
1551
1552 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1553 abfd, r_symndx);
1554 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1555 }
4c544807
L		 1556 }
1557
142411ca
L		 1558 (*_bfd_error_handler)
1559 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1560 "in section `%A' failed"),
4c544807 1561 abfd, sec, from->name, to->name, name,
142411ca
L		 1562 (unsigned long) rel->r_offset);
1563 bfd_set_error (bfd_error_bad_value);
1564 return FALSE;
13ae64f3
JJ		 1565 }
1566
142411ca
L		 1567 *r_type = to_type;
1568 return TRUE;
13ae64f3
JJ		 1569}
1570
c175a657
L		 1571/* With the local symbol, foo, we convert
1572 mov foo@GOT[(%reg1)], %reg2
1573 to
1574 lea foo[@GOTOFF(%reg1)], %reg2
1575 and convert
1576 call/jmp *foo@GOT[(%reg)]
1577 to
1578 nop call foo/jmp foo nop
1579 When PIC is false, convert
1580 test %reg1, foo@GOT[(%reg2)]
1581 to
1582 test $foo, %reg1
1583 and convert
1584 binop foo@GOT[(%reg1)], %reg2
1585 to
1586 binop $foo, %reg2
1587 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1588 instructions. */
1589
1590static
1591bfd_boolean
1592elf_i386_convert_load_reloc (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
1593 bfd_byte *contents,
1594 Elf_Internal_Rela *irel,
1595 struct elf_link_hash_entry *h,
1596 bfd_boolean *converted,
1597 struct bfd_link_info *link_info)
1598{
1599 struct elf_i386_link_hash_table *htab;
1600 unsigned int opcode;
1601 unsigned int modrm;
1602 bfd_boolean baseless;
1603 Elf_Internal_Sym *isym;
1604 unsigned int addend;
1605 unsigned int nop;
1606 bfd_vma nop_offset;
1607 bfd_boolean is_pic;
1608 bfd_boolean to_reloc_32;
1609 unsigned int r_type;
1610 unsigned int r_symndx;
1611 bfd_vma roff = irel->r_offset;
1612
1613 if (roff < 2)
1614 return TRUE;
1615
7d4d9709 1616 /* Addend for R_386_GOT32X relocations must be 0. */
c175a657
L		 1617 addend = bfd_get_32 (abfd, contents + roff);
1618 if (addend != 0)
1619 return TRUE;
1620
1621 htab = elf_i386_hash_table (link_info);
1622 is_pic = bfd_link_pic (link_info);
1623
1624 r_type = ELF32_R_TYPE (irel->r_info);
1625 r_symndx = ELF32_R_SYM (irel->r_info);
1626
1627 modrm = bfd_get_8 (abfd, contents + roff - 1);
1628 baseless = (modrm & 0xc7) == 0x5;
1629
7d4d9709 1630 if (baseless && is_pic)
c175a657
L		 1631 {
1632 /* For PIC, disallow R_386_GOT32X without a base register
7d4d9709 1633 since we don't know what the GOT base is. */
c175a657
L		 1634 const char *name;
1635
1636 if (h == NULL)
1637 {
1638 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd,
1639 r_symndx);
1640 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1641 }
1642 else
1643 name = h->root.root.string;
1644
1645 (*_bfd_error_handler)
1646 (_("%B: direct GOT relocation R_386_GOT32X against `%s' without base register can not be used when making a shared object"),
1647 abfd, name);
1648 return FALSE;
1649 }
1650
1651 opcode = bfd_get_8 (abfd, contents + roff - 2);
1652
c175a657
L		 1653 /* Convert to R_386_32 if PIC is false or there is no base
1654 register. */
1655 to_reloc_32 = !is_pic || baseless;
1656
7d4d9709
L		 1657 /* Try to convert R_386_GOT32X. Get the symbol referred to by the
1658 reloc. */
c175a657
L		 1659 if (h == NULL)
1660 {
1661 if (opcode == 0x0ff)
1662 /* Convert "call/jmp *foo@GOT[(%reg)]". */
1663 goto convert_branch;
1664 else
1665 /* Convert "mov foo@GOT[(%reg1)], %reg2",
1666 "test %reg1, foo@GOT(%reg2)" and
1667 "binop foo@GOT[(%reg1)], %reg2". */
1668 goto convert_load;
1669 }
1670
1671 /* Undefined weak symbol is only bound locally in executable
1672 and its reference is resolved as 0. */
1673 if (UNDEFINED_WEAK_RESOLVED_TO_ZERO (link_info, TRUE,
1674 elf_i386_hash_entry (h)))
1675 {
1676 if (opcode == 0xff)
1677 {
1678 /* No direct branch to 0 for PIC. */
1679 if (is_pic)
1680 return TRUE;
1681 else
1682 goto convert_branch;
1683 }
1684 else
1685 {
1686 /* We can convert load of address 0 to R_386_32. */
1687 to_reloc_32 = TRUE;
1688 goto convert_load;
1689 }
1690 }
1691
1692 if (opcode == 0xff)
1693 {
1694 /* We have "call/jmp *foo@GOT[(%reg)]". */
1695 if ((h->root.type == bfd_link_hash_defined
1696 || h->root.type == bfd_link_hash_defweak)
1697 && SYMBOL_REFERENCES_LOCAL (link_info, h))
1698 {
1699 /* The function is locally defined. */
1700convert_branch:
1701 /* Convert R_386_GOT32X to R_386_PC32. */
1702 if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
1703 {
6eaa7fb5
L		 1704 struct elf_i386_link_hash_entry *eh
1705 = (struct elf_i386_link_hash_entry *) h;
1706
c175a657
L		 1707 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1708 is a nop prefix. */
1709 modrm = 0xe8;
6eaa7fb5
L		 1710 /* To support TLS optimization, always use addr32 prefix
1711 for "call *___tls_get_addr@GOT(%reg)". */
1712 if (eh && eh->tls_get_addr == 1)
c175a657 1713 {
6eaa7fb5
L		 1714 nop = 0x67;
1715 nop_offset = irel->r_offset - 2;
c175a657
L		 1716 }
1717 else
6eaa7fb5
L		 1718 {
1719 nop = link_info->call_nop_byte;
1720 if (link_info->call_nop_as_suffix)
1721 {
1722 nop_offset = roff + 3;
1723 irel->r_offset -= 1;
1724 }
1725 else
1726 nop_offset = roff - 2;
1727 }
c175a657
L		 1728 }
1729 else
1730 {
1731 /* Convert to "jmp foo nop". */
1732 modrm = 0xe9;
1733 nop = NOP_OPCODE;
1734 nop_offset = roff + 3;
1735 irel->r_offset -= 1;
1736 }
1737
1738 bfd_put_8 (abfd, nop, contents + nop_offset);
1739 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
1740 /* When converting to PC-relative relocation, we
1741 need to adjust addend by -4. */
1742 bfd_put_32 (abfd, -4, contents + irel->r_offset);
1743 irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32);
1744
1745 *converted = TRUE;
1746 }
1747 }
1748 else
1749 {
1750 /* We have "mov foo@GOT[(%re1g)], %reg2",
1751 "test %reg1, foo@GOT(%reg2)" and
1752 "binop foo@GOT[(%reg1)], %reg2".
1753
1754 Avoid optimizing _DYNAMIC since ld.so may use its
1755 link-time address. */
1756 if (h == htab->elf.hdynamic)
1757 return TRUE;
1758
1759 /* def_regular is set by an assignment in a linker script in
1760 bfd_elf_record_link_assignment. */
1761 if ((h->def_regular
1762 || h->root.type == bfd_link_hash_defined
1763 || h->root.type == bfd_link_hash_defweak)
1764 && SYMBOL_REFERENCES_LOCAL (link_info, h))
1765 {
1766convert_load:
1767 if (opcode == 0x8b)
1768 {
1769 if (to_reloc_32)
1770 {
1771 /* Convert "mov foo@GOT[(%reg1)], %reg2" to
1772 "mov $foo, %reg2" with R_386_32. */
1773 r_type = R_386_32;
1774 modrm = 0xc0 | (modrm & 0x38) >> 3;
1775 bfd_put_8 (abfd, modrm, contents + roff - 1);
1776 opcode = 0xc7;
1777 }
1778 else
1779 {
1780 /* Convert "mov foo@GOT(%reg1), %reg2" to
1781 "lea foo@GOTOFF(%reg1), %reg2". */
1782 r_type = R_386_GOTOFF;
1783 opcode = 0x8d;
1784 }
1785 }
1786 else
1787 {
1788 /* Only R_386_32 is supported. */
1789 if (!to_reloc_32)
1790 return TRUE;
1791
1792 if (opcode == 0x85)
1793 {
1794 /* Convert "test %reg1, foo@GOT(%reg2)" to
1795 "test $foo, %reg1". */
1796 modrm = 0xc0 | (modrm & 0x38) >> 3;
1797 opcode = 0xf7;
1798 }
1799 else
1800 {
1801 /* Convert "binop foo@GOT(%reg1), %reg2" to
1802 "binop $foo, %reg2". */
1803 modrm = (0xc0
1804 | (modrm & 0x38) >> 3
1805 | (opcode & 0x3c));
1806 opcode = 0x81;
1807 }
1808 bfd_put_8 (abfd, modrm, contents + roff - 1);
1809 r_type = R_386_32;
1810 }
1811
1812 bfd_put_8 (abfd, opcode, contents + roff - 2);
1813 irel->r_info = ELF32_R_INFO (r_symndx, r_type);
1814
1815 *converted = TRUE;
1816 }
1817 }
1818
1819 return TRUE;
1820}
1821
c1d11331
L		 1822/* Rename some of the generic section flags to better document how they
1823 are used here. */
c337a162
L		 1824#define need_convert_load sec_flg0
1825#define check_relocs_failed sec_flg1
c1d11331 1826
252b5132 1827/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1828 calculate needed space in the global offset table, procedure linkage
1829 table, and dynamic reloc sections. */
252b5132 1830
b34976b6 1831static bfd_boolean
55fd94b0
AM		 1832elf_i386_check_relocs (bfd *abfd,
1833 struct bfd_link_info *info,
1834 asection *sec,
1835 const Elf_Internal_Rela *relocs)
252b5132 1836{
6725bdbf 1837 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1838 Elf_Internal_Shdr *symtab_hdr;
1839 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1840 const Elf_Internal_Rela *rel;
1841 const Elf_Internal_Rela *rel_end;
252b5132 1842 asection *sreloc;
bedfd056 1843 bfd_byte *contents;
dd7e64d4 1844 bfd_boolean use_plt_got;
252b5132 1845
0e1862bb 1846 if (bfd_link_relocatable (info))
b34976b6 1847 return TRUE;
252b5132 1848
0ffa91dd
NC		 1849 BFD_ASSERT (is_i386_elf (abfd));
1850
6725bdbf 1851 htab = elf_i386_hash_table (info);
4dfe6ac6 1852 if (htab == NULL)
c337a162
L		 1853 {
1854 sec->check_relocs_failed = 1;
1855 return FALSE;
1856 }
4dfe6ac6 1857
bedfd056
L		 1858 /* Get the section contents. */
1859 if (elf_section_data (sec)->this_hdr.contents != NULL)
1860 contents = elf_section_data (sec)->this_hdr.contents;
1861 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1862 {
1863 sec->check_relocs_failed = 1;
1864 return FALSE;
1865 }
1866
dd7e64d4
L		 1867 use_plt_got = (!get_elf_i386_backend_data (abfd)->is_vxworks
1868 && (get_elf_i386_backend_data (abfd)
1869 == &elf_i386_arch_bed));
1870
0ffa91dd 1871 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1872 sym_hashes = elf_sym_hashes (abfd);
252b5132 1873
252b5132
RH		 1874 sreloc = NULL;
1875
1876 rel_end = relocs + sec->reloc_count;
1877 for (rel = relocs; rel < rel_end; rel++)
1878 {
13ae64f3 1879 unsigned int r_type;
252b5132
RH		 1880 unsigned long r_symndx;
1881 struct elf_link_hash_entry *h;
d5597ebc 1882 struct elf_i386_link_hash_entry *eh;
4c544807
L		 1883 Elf_Internal_Sym *isym;
1884 const char *name;
06a6a421 1885 bfd_boolean size_reloc;
252b5132
RH		 1886
1887 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1888 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1889
d9bc7a44 1890 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1891 {
d003868e
AM		 1892 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1893 abfd,
8f615d07 1894 r_symndx);
c337a162 1895 goto error_return;
f5f31454
L		 1896 }
1897
252b5132 1898 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1899 {
1900 /* A local symbol. */
c2e61a4e
L		 1901 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1902 abfd, r_symndx);
1903 if (isym == NULL)
c337a162 1904 goto error_return;
c25bc9fc
L		 1905
1906 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1907 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1908 {
9fff0c39 1909 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1910 if (h == NULL)
c337a162 1911 goto error_return;
6bbec505 1912
c25bc9fc
L		 1913 /* Fake a STT_GNU_IFUNC symbol. */
1914 h->type = STT_GNU_IFUNC;
1915 h->def_regular = 1;
1916 h->ref_regular = 1;
1917 h->forced_local = 1;
1918 h->root.type = bfd_link_hash_defined;
1919 }
1920 else
1921 h = NULL;
1922 }
252b5132 1923 else
71cb9464 1924 {
4c544807 1925 isym = NULL;
71cb9464
L		 1926 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1927 while (h->root.type == bfd_link_hash_indirect
1928 || h->root.type == bfd_link_hash_warning)
1929 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1930 }
cbe950e9 1931
d5597ebc 1932 eh = (struct elf_i386_link_hash_entry *) h;
c25bc9fc
L		 1933 if (h != NULL)
1934 {
cbe950e9
L		 1935 switch (r_type)
1936 {
1937 default:
1938 break;
1939
d5597ebc
L		 1940 case R_386_GOTOFF:
1941 eh->gotoff_ref = 1;
cbe950e9
L		 1942 case R_386_32:
1943 case R_386_PC32:
1944 case R_386_PLT32:
1945 case R_386_GOT32:
02a86693 1946 case R_386_GOT32X:
9d4057ee
AM		 1947 if (htab->elf.dynobj == NULL)
1948 htab->elf.dynobj = abfd;
466ee2af
L		 1949 /* Create the ifunc sections for static executables. */
1950 if (h->type == STT_GNU_IFUNC
1951 && !_bfd_elf_create_ifunc_sections (htab->elf.dynobj,
1952 info))
c337a162 1953 goto error_return;
cbe950e9
L		 1954 break;
1955 }
1956
ad1e85de
L		 1957 /* It is referenced by a non-shared object. */
1958 h->ref_regular = 1;
61315175 1959 h->root.non_ir_ref = 1;
13a2df29
L		 1960
1961 if (h->type == STT_GNU_IFUNC)
1962 elf_tdata (info->output_bfd)->has_gnu_symbols
1963 |= elf_gnu_symbol_ifunc;
71cb9464 1964 }
252b5132 1965
bedfd056 1966 if (! elf_i386_tls_transition (info, abfd, sec, contents,
142411ca
L		 1967 symtab_hdr, sym_hashes,
1968 &r_type, GOT_UNKNOWN,
bedfd056 1969 rel, rel_end, h, r_symndx, FALSE))
c337a162 1970 goto error_return;
13ae64f3
JJ		 1971
1972 switch (r_type)
252b5132 1973 {
37e55690
JJ		 1974 case R_386_TLS_LDM:
1975 htab->tls_ldm_got.refcount += 1;
1976 goto create_got;
1977
1978 case R_386_PLT32:
1979 /* This symbol requires a procedure linkage table entry. We
1980 actually build the entry in adjust_dynamic_symbol,
1981 because this might be a case of linking PIC code which is
1982 never referenced by a dynamic object, in which case we
1983 don't need to generate a procedure linkage table entry
1984 after all. */
1985
1986 /* If this is a local symbol, we resolve it directly without
1987 creating a procedure linkage table entry. */
1988 if (h == NULL)
1989 continue;
1990
aec6b87e 1991 eh->has_got_reloc = 1;
f5385ebf 1992 h->needs_plt = 1;
37e55690
JJ		 1993 h->plt.refcount += 1;
1994 break;
1995
6a3e1bae 1996 case R_386_SIZE32:
06a6a421 1997 size_reloc = TRUE;
6a3e1bae
L		 1998 goto do_size;
1999
13ae64f3 2000 case R_386_TLS_IE_32:
37e55690
JJ		 2001 case R_386_TLS_IE:
2002 case R_386_TLS_GOTIE:
0e1862bb 2003 if (!bfd_link_executable (info))
13ae64f3 2004 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 2005 /* Fall through */
2006
252b5132 2007 case R_386_GOT32:
02a86693 2008 case R_386_GOT32X:
13ae64f3 2009 case R_386_TLS_GD:
67a4f2b7
AO		 2010 case R_386_TLS_GOTDESC:
2011 case R_386_TLS_DESC_CALL:
252b5132 2012 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 2013 {
2014 int tls_type, old_tls_type;
2015
2016 switch (r_type)
2017 {
2018 default:
02a86693
L		 2019 case R_386_GOT32:
2020 case R_386_GOT32X:
2021 tls_type = GOT_NORMAL;
2022 break;
13ae64f3 2023 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 2024 case R_386_TLS_GOTDESC:
2025 case R_386_TLS_DESC_CALL:
2026 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 2027 case R_386_TLS_IE_32:
2028 if (ELF32_R_TYPE (rel->r_info) == r_type)
2029 tls_type = GOT_TLS_IE_NEG;
2030 else
ebcfb3c0
JJ		 2031 /* If this is a GD->IE transition, we may use either of
2032 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 2033 tls_type = GOT_TLS_IE;
2034 break;
2035 case R_386_TLS_IE:
2036 case R_386_TLS_GOTIE:
2037 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 2038 }
2039
2040 if (h != NULL)
2041 {
2042 h->got.refcount += 1;
2043 old_tls_type = elf_i386_hash_entry(h)->tls_type;
2044 }
2045 else
2046 {
2047 bfd_signed_vma *local_got_refcounts;
2048
2049 /* This is a global offset table entry for a local symbol. */
2050 local_got_refcounts = elf_local_got_refcounts (abfd);
2051 if (local_got_refcounts == NULL)
2052 {
2053 bfd_size_type size;
2054
2055 size = symtab_hdr->sh_info;
67a4f2b7
AO		 2056 size *= (sizeof (bfd_signed_vma)
2057 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 2058 local_got_refcounts = (bfd_signed_vma *)
2059 bfd_zalloc (abfd, size);
13ae64f3 2060 if (local_got_refcounts == NULL)
c337a162 2061 goto error_return;
13ae64f3 2062 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 2063 elf_i386_local_tlsdesc_gotent (abfd)
2064 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 2065 elf_i386_local_got_tls_type (abfd)
67a4f2b7 2066 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 2067 }
2068 local_got_refcounts[r_symndx] += 1;
2069 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
2070 }
2071
37e55690
JJ		 2072 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
2073 tls_type |= old_tls_type;
13ae64f3
JJ		 2074 /* If a TLS symbol is accessed using IE at least once,
2075 there is no point to use dynamic model for it. */
ebcfb3c0 2076 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 2077 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 2078 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 2079 {
67a4f2b7 2080 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 2081 tls_type = old_tls_type;
67a4f2b7
AO		 2082 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2083 && GOT_TLS_GD_ANY_P (tls_type))
2084 tls_type |= old_tls_type;
13ae64f3
JJ		 2085 else
2086 {
09a24cbf 2087 if (h)
4c544807
L		 2088 name = h->root.root.string;
2089 else
2090 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
2091 NULL);
13ae64f3 2092 (*_bfd_error_handler)
d003868e 2093 (_("%B: `%s' accessed both as normal and "
55fd94b0 2094 "thread local symbol"),
4c544807 2095 abfd, name);
68c4a57e 2096 bfd_set_error (bfd_error_bad_value);
c337a162 2097 goto error_return;
13ae64f3
JJ		 2098 }
2099 }
2100
2101 if (old_tls_type != tls_type)
2102 {
2103 if (h != NULL)
2104 elf_i386_hash_entry (h)->tls_type = tls_type;
2105 else
2106 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
2107 }
2108 }
0ac8d2ca
AM		 2109 /* Fall through */
2110
2111 case R_386_GOTOFF:
2112 case R_386_GOTPC:
13ae64f3 2113 create_got:
6de2ae4a 2114 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 2115 {
2116 if (htab->elf.dynobj == NULL)
2117 htab->elf.dynobj = abfd;
6de2ae4a 2118 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c337a162 2119 goto error_return;
0ac8d2ca 2120 }
37e55690 2121 if (r_type != R_386_TLS_IE)
aec6b87e
L		 2122 {
2123 if (eh != NULL)
2124 eh->has_got_reloc = 1;
2125 break;
2126 }
37e55690 2127 /* Fall through */
252b5132 2128
37e55690
JJ		 2129 case R_386_TLS_LE_32:
2130 case R_386_TLS_LE:
aec6b87e
L		 2131 if (eh != NULL)
2132 eh->has_got_reloc = 1;
0e1862bb 2133 if (bfd_link_executable (info))
37e55690 2134 break;
bffbf940 2135 info->flags |= DF_STATIC_TLS;
aec6b87e 2136 goto do_relocation;
252b5132
RH		 2137
2138 case R_386_32:
2139 case R_386_PC32:
aec6b87e
L		 2140 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
2141 eh->has_non_got_reloc = 1;
2142do_relocation:
d1ed1c7d
L		 2143 /* STT_GNU_IFUNC symbol must go through PLT even if it is
2144 locally defined and undefined symbol may turn out to be
2145 a STT_GNU_IFUNC symbol later. */
2146 if (h != NULL
2147 && (bfd_link_executable (info)
2148 || ((h->type == STT_GNU_IFUNC
2149 || h->root.type == bfd_link_hash_undefweak
2150 || h->root.type == bfd_link_hash_undefined)
2151 && SYMBOLIC_BIND (info, h))))
6725bdbf 2152 {
12d0ee4a 2153 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 2154 need a copy reloc. We can't check reliably at this
2155 stage whether the section is read-only, as input
2156 sections have not yet been mapped to output sections.
2157 Tentatively set the flag for now, and correct in
2158 adjust_dynamic_symbol. */
f5385ebf 2159 h->non_got_ref = 1;
12d0ee4a
AM		 2160
2161 /* We may need a .plt entry if the function this reloc
2162 refers to is in a shared lib. */
51b64d56 2163 h->plt.refcount += 1;
4b627c18
L		 2164 if (r_type == R_386_PC32)
2165 {
2166 /* Since something like ".long foo - ." may be used
2167 as pointer, make sure that PLT is used if foo is
2168 a function defined in a shared library. */
2169 if ((sec->flags & SEC_CODE) == 0)
2170 h->pointer_equality_needed = 1;
2171 }
2172 else
04ebc307
L		 2173 {
2174 h->pointer_equality_needed = 1;
2175 /* R_386_32 can be resolved at run-time. */
2176 if (r_type == R_386_32
2177 && (sec->flags & SEC_READONLY) == 0)
2178 eh->func_pointer_refcount += 1;
2179 }
6725bdbf 2180 }
7843f00e 2181
06a6a421 2182 size_reloc = FALSE;
6a3e1bae 2183do_size:
252b5132 2184 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 2185 against a global symbol, or a non PC relative reloc
2186 against a local symbol, then we need to copy the reloc
2187 into the shared library. However, if we are linking with
2188 -Bsymbolic, we do not need to copy a reloc against a
2189 global symbol which is defined in an object we are
2190 including in the link (i.e., DEF_REGULAR is set). At
2191 this point we have not seen all the input files, so it is
2192 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 2193 later (it is never cleared). In case of a weak definition,
2194 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 2195 a shared library. We account for that possibility below by
1f655a09
L		 2196 storing information in the relocs_copied field of the hash
2197 table entry. A similar situation occurs when creating
2198 shared libraries and symbol visibility changes render the
12d0ee4a 2199 symbol local.
56882138 2200
12d0ee4a
AM		 2201 If on the other hand, we are creating an executable, we
2202 may need to keep relocations for symbols satisfied by a
2203 dynamic library if we manage to avoid copy relocs for the
2204 symbol. */
0e1862bb 2205 if ((bfd_link_pic (info)
12d0ee4a 2206 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 2207 && (r_type != R_386_PC32
12d0ee4a 2208 || (h != NULL
4e0c91e4
L		 2209 && (! (bfd_link_pie (info)
2210 || SYMBOLIC_BIND (info, h))
12d0ee4a 2211 || h->root.type == bfd_link_hash_defweak
f5385ebf 2212 || !h->def_regular))))
a23b6845 2213 || (ELIMINATE_COPY_RELOCS
0e1862bb 2214 && !bfd_link_pic (info)
12d0ee4a
AM		 2215 && (sec->flags & SEC_ALLOC) != 0
2216 && h != NULL
12d0ee4a 2217 && (h->root.type == bfd_link_hash_defweak
0f88be7a 2218 || !h->def_regular)))
252b5132 2219 {
e03a8ed8
L		 2220 struct elf_dyn_relocs *p;
2221 struct elf_dyn_relocs **head;
ec338859 2222
12d0ee4a
AM		 2223 /* We must copy these reloc types into the output file.
2224 Create a reloc section in dynobj and make room for
2225 this reloc. */
252b5132
RH		 2226 if (sreloc == NULL)
2227 {
0ac8d2ca
AM		 2228 if (htab->elf.dynobj == NULL)
2229 htab->elf.dynobj = abfd;
2230
83bac4b0
NC		 2231 sreloc = _bfd_elf_make_dynamic_reloc_section
2232 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
2233
252b5132 2234 if (sreloc == NULL)
c337a162 2235 goto error_return;
252b5132
RH		 2236 }
2237
0c715baa
AM		 2238 /* If this is a global symbol, we count the number of
2239 relocations we need for this symbol. */
2240 if (h != NULL)
252b5132 2241 {
d5597ebc 2242 head = &eh->dyn_relocs;
0c715baa
AM		 2243 }
2244 else
2245 {
ec338859
AM		 2246 /* Track dynamic relocs needed for local syms too.
2247 We really need local syms available to do this
2248 easily. Oh well. */
87d72d41 2249 void **vpp;
ec338859 2250 asection *s;
87d72d41
AM		 2251
2252 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2253 abfd, r_symndx);
2254 if (isym == NULL)
c337a162 2255 goto error_return;
87d72d41
AM		 2256
2257 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 2258 if (s == NULL)
87d72d41 2259 s = sec;
ec338859 2260
e81d3500 2261 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 2262 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 2263 }
2264
2265 p = *head;
2266 if (p == NULL || p->sec != sec)
2267 {
2268 bfd_size_type amt = sizeof *p;
a50b1753
NC		 2269 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
2270 amt);
ec338859 2271 if (p == NULL)
c337a162 2272 goto error_return;
ec338859
AM		 2273 p->next = *head;
2274 *head = p;
2275 p->sec = sec;
2276 p->count = 0;
2277 p->pc_count = 0;
252b5132 2278 }
ec338859
AM		 2279
2280 p->count += 1;
06a6a421
L		 2281 /* Count size relocation as PC-relative relocation. */
2282 if (r_type == R_386_PC32 || size_reloc)
ec338859 2283 p->pc_count += 1;
252b5132 2284 }
252b5132
RH		 2285 break;
2286
2287 /* This relocation describes the C++ object vtable hierarchy.
2288 Reconstruct it for later use during GC. */
2289 case R_386_GNU_VTINHERIT:
d17e0c6e 2290 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c337a162 2291 goto error_return;
252b5132
RH		 2292 break;
2293
2294 /* This relocation describes which C++ vtable entries are actually
2295 used. Record for later use during GC. */
2296 case R_386_GNU_VTENTRY:
c6aa130f
MS		 2297 BFD_ASSERT (h != NULL);
2298 if (h != NULL
2299 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c337a162 2300 goto error_return;
252b5132
RH		 2301 break;
2302
2303 default:
2304 break;
2305 }
dd7e64d4
L		 2306
2307 if (use_plt_got
2308 && h != NULL
2309 && h->plt.refcount > 0
8ded2ddc
L		 2310 && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
2311 || h->got.refcount > 0)
dd7e64d4
L		 2312 && htab->plt_got == NULL)
2313 {
2314 /* Create the GOT procedure linkage table. */
2315 unsigned int plt_got_align;
2316 const struct elf_backend_data *bed;
2317
2318 bed = get_elf_backend_data (info->output_bfd);
2319 BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
2320 && (sizeof (elf_i386_got_plt_entry)
2321 == sizeof (elf_i386_pic_got_plt_entry)));
2322 plt_got_align = 3;
2323
2324 if (htab->elf.dynobj == NULL)
2325 htab->elf.dynobj = abfd;
2326 htab->plt_got
2327 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2328 ".plt.got",
2329 (bed->dynamic_sec_flags
2330 | SEC_ALLOC
2331 | SEC_CODE
2332 | SEC_LOAD
2333 | SEC_READONLY));
2334 if (htab->plt_got == NULL
2335 || !bfd_set_section_alignment (htab->elf.dynobj,
2336 htab->plt_got,
2337 plt_got_align))
c337a162 2338 goto error_return;
dd7e64d4 2339 }
c1d11331 2340
52bf37dd 2341 if (r_type == R_386_GOT32X
c1d11331 2342 && (h == NULL || h->type != STT_GNU_IFUNC))
02a86693 2343 sec->need_convert_load = 1;
252b5132
RH		 2344 }
2345
bedfd056
L		 2346 if (elf_section_data (sec)->this_hdr.contents != contents)
2347 {
2348 if (!info->keep_memory)
2349 free (contents);
2350 else
2351 {
2352 /* Cache the section contents for elf_link_input_bfd. */
2353 elf_section_data (sec)->this_hdr.contents = contents;
2354 }
2355 }
2356
b34976b6 2357 return TRUE;
c337a162
L		 2358
2359error_return:
bedfd056
L		 2360 if (elf_section_data (sec)->this_hdr.contents != contents)
2361 free (contents);
c337a162
L		 2362 sec->check_relocs_failed = 1;
2363 return FALSE;
252b5132
RH		 2364}
2365
2366/* Return the section that should be marked against GC for a given
2367 relocation. */
2368
2369static asection *
55fd94b0 2370elf_i386_gc_mark_hook (asection *sec,
07adf181 2371 struct bfd_link_info *info,
55fd94b0
AM		 2372 Elf_Internal_Rela *rel,
2373 struct elf_link_hash_entry *h,
2374 Elf_Internal_Sym *sym)
252b5132
RH		 2375{
2376 if (h != NULL)
07adf181
AM		 2377 switch (ELF32_R_TYPE (rel->r_info))
2378 {
2379 case R_386_GNU_VTINHERIT:
2380 case R_386_GNU_VTENTRY:
2381 return NULL;
2382 }
2383
2384 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 2385}
2386
aec6b87e
L		 2387/* Remove undefined weak symbol from the dynamic symbol table if it
2388 is resolved to 0. */
2389
2390static bfd_boolean
2391elf_i386_fixup_symbol (struct bfd_link_info *info,
2392 struct elf_link_hash_entry *h)
2393{
2394 if (h->dynindx != -1
2395 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
e62b9723 2396 elf_i386_hash_entry (h)->has_got_reloc,
aec6b87e
L		 2397 elf_i386_hash_entry (h)))
2398 {
2399 h->dynindx = -1;
2400 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2401 h->dynstr_index);
2402 }
2403 return TRUE;
2404}
2405
252b5132
RH		 2406/* Adjust a symbol defined by a dynamic object and referenced by a
2407 regular object. The current definition is in some section of the
2408 dynamic object, but we're not including those sections. We have to
2409 change the definition to something the rest of the link can
2410 understand. */
2411
b34976b6 2412static bfd_boolean
55fd94b0
AM		 2413elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2414 struct elf_link_hash_entry *h)
252b5132 2415{
6725bdbf 2416 struct elf_i386_link_hash_table *htab;
252b5132 2417 asection *s;
5ca5bb35
L		 2418 struct elf_i386_link_hash_entry *eh;
2419 struct elf_dyn_relocs *p;
252b5132 2420
cbe950e9
L		 2421 /* STT_GNU_IFUNC symbol must go through PLT. */
2422 if (h->type == STT_GNU_IFUNC)
2423 {
73bcf233
L		 2424 /* All local STT_GNU_IFUNC references must be treate as local
2425 calls via local PLT. */
5ca5bb35
L		 2426 if (h->ref_regular
2427 && SYMBOL_CALLS_LOCAL (info, h))
2428 {
73bcf233 2429 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2430 struct elf_dyn_relocs **pp;
2431
2432 eh = (struct elf_i386_link_hash_entry *) h;
2433 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2434 {
2435 pc_count += p->pc_count;
2436 p->count -= p->pc_count;
2437 p->pc_count = 0;
73bcf233 2438 count += p->count;
5ca5bb35
L		 2439 if (p->count == 0)
2440 *pp = p->next;
2441 else
2442 pp = &p->next;
2443 }
2444
73bcf233 2445 if (pc_count || count)
5ca5bb35
L		 2446 {
2447 h->needs_plt = 1;
5ca5bb35 2448 h->non_got_ref = 1;
a5479e5f
L		 2449 if (h->plt.refcount <= 0)
2450 h->plt.refcount = 1;
2451 else
2452 h->plt.refcount += 1;
5ca5bb35
L		 2453 }
2454 }
2455
cbe950e9
L		 2456 if (h->plt.refcount <= 0)
2457 {
2458 h->plt.offset = (bfd_vma) -1;
2459 h->needs_plt = 0;
2460 }
2461 return TRUE;
2462 }
2463
252b5132
RH		 2464 /* If this is a function, put it in the procedure linkage table. We
2465 will fill in the contents of the procedure linkage table later,
2466 when we know the address of the .got section. */
2467 if (h->type == STT_FUNC
f5385ebf 2468 || h->needs_plt)
252b5132 2469 {
6725bdbf 2470 if (h->plt.refcount <= 0
9c7a29a3
AM		 2471 || SYMBOL_CALLS_LOCAL (info, h)
2472 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2473 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2474 {
2475 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2476 file, but the symbol was never referred to by a dynamic
2477 object, or if all references were garbage collected. In
2478 such a case, we don't actually need to build a procedure
2479 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2480 h->plt.offset = (bfd_vma) -1;
f5385ebf 2481 h->needs_plt = 0;
252b5132
RH		 2482 }
2483
b34976b6 2484 return TRUE;
252b5132 2485 }
6725bdbf
AM		 2486 else
2487 /* It's possible that we incorrectly decided a .plt reloc was
2488 needed for an R_386_PC32 reloc to a non-function sym in
2489 check_relocs. We can't decide accurately between function and
2490 non-function syms in check-relocs; Objects loaded later in
2491 the link may change h->type. So fix it now. */
bbd7ec4a 2492 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2493
2494 /* If this is a weak symbol, and there is a real definition, the
2495 processor independent code will have arranged for us to see the
2496 real definition first, and we can just use the same value. */
f6e332e6 2497 if (h->u.weakdef != NULL)
252b5132 2498 {
f6e332e6
AM		 2499 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2500 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2501 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2502 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2503 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2504 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2505 return TRUE;
252b5132
RH		 2506 }
2507
2508 /* This is a reference to a symbol defined by a dynamic object which
2509 is not a function. */
2510
2511 /* If we are creating a shared library, we must presume that the
2512 only references to the symbol are via the global offset table.
2513 For such cases we need not do anything here; the relocations will
2514 be handled correctly by relocate_section. */
0e1862bb 2515 if (!bfd_link_executable (info))
b34976b6 2516 return TRUE;
252b5132 2517
7843f00e 2518 /* If there are no references to this symbol that do not use the
d5597ebc
L		 2519 GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
2520 reloc. */
2521 eh = (struct elf_i386_link_hash_entry *) h;
2522 if (!h->non_got_ref && !eh->gotoff_ref)
b34976b6 2523 return TRUE;
7843f00e 2524
8bd621d8
AM		 2525 /* If -z nocopyreloc was given, we won't generate them either. */
2526 if (info->nocopyreloc)
2527 {
f5385ebf 2528 h->non_got_ref = 0;
b34976b6 2529 return TRUE;
8bd621d8
AM		 2530 }
2531
643796e3 2532 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2533 if (htab == NULL)
2534 return FALSE;
643796e3 2535
d5597ebc
L		 2536 /* If there aren't any dynamic relocs in read-only sections nor
2537 R_386_GOTOFF relocation, then we can keep the dynamic relocs and
2538 avoid the copy reloc. This doesn't work on VxWorks, where we can
2539 not have dynamic relocations (other than copy and jump slot
2540 relocations) in an executable. */
23209a78 2541 if (ELIMINATE_COPY_RELOCS
d5597ebc 2542 && !eh->gotoff_ref
23209a78 2543 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2544 {
a23b6845
AM		 2545 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2546 {
2547 s = p->sec->output_section;
2548 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2549 break;
2550 }
2551
a23b6845
AM		 2552 if (p == NULL)
2553 {
f5385ebf 2554 h->non_got_ref = 0;
a23b6845
AM		 2555 return TRUE;
2556 }
ebe50bae
AM		 2557 }
2558
252b5132
RH		 2559 /* We must allocate the symbol in our .dynbss section, which will
2560 become part of the .bss section of the executable. There will be
2561 an entry for this symbol in the .dynsym section. The dynamic
2562 object will contain position independent code, so all references
2563 from the dynamic object to this symbol will go through the global
2564 offset table. The dynamic linker will use the .dynsym entry to
2565 determine the address it must put in the global offset table, so
2566 both the dynamic object and the regular object will refer to the
2567 same memory location for the variable. */
2568
252b5132
RH		 2569 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2570 copy the initial value out of the dynamic object and into the
0ac8d2ca 2571 runtime process image. */
1d7e9d18 2572 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2573 {
eea6121a 2574 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2575 h->needs_copy = 1;
252b5132
RH		 2576 }
2577
0ac8d2ca 2578 s = htab->sdynbss;
252b5132 2579
6cabe1ea 2580 return _bfd_elf_adjust_dynamic_copy (info, h, s);
252b5132
RH		 2581}
2582
6725bdbf 2583/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2584 dynamic relocs. */
6725bdbf 2585
b34976b6 2586static bfd_boolean
eb4ff4d6 2587elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2588{
2589 struct bfd_link_info *info;
2590 struct elf_i386_link_hash_table *htab;
5a15f56f 2591 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2592 struct elf_dyn_relocs *p;
25e762b9 2593 unsigned plt_entry_size;
aec6b87e 2594 bfd_boolean resolved_to_zero;
6725bdbf 2595
e92d460e 2596 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2597 return TRUE;
6725bdbf 2598
cbe950e9 2599 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2600
6725bdbf
AM		 2601 info = (struct bfd_link_info *) inf;
2602 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2603 if (htab == NULL)
2604 return FALSE;
6725bdbf 2605
25e762b9
RM		 2606 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2607
e62b9723
L		 2608 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
2609 eh->has_got_reloc,
2610 eh);
aec6b87e 2611
04ebc307
L		 2612 /* Clear the reference count of function pointer relocations if
2613 symbol isn't a normal function. */
2614 if (h->type != STT_FUNC)
2615 eh->func_pointer_refcount = 0;
2616
dd7e64d4
L		 2617 /* We can't use the GOT PLT if pointer equality is needed since
2618 finish_dynamic_symbol won't clear symbol value and the dynamic
2619 linker won't update the GOT slot. We will get into an infinite
2620 loop at run-time. */
2621 if (htab->plt_got != NULL
2622 && h->type != STT_GNU_IFUNC
2623 && !h->pointer_equality_needed
2624 && h->plt.refcount > 0
2625 && h->got.refcount > 0)
2626 {
2627 /* Don't use the regular PLT if there are both GOT and GOTPLT
2628 reloctions. */
2629 h->plt.offset = (bfd_vma) -1;
2630
2631 /* Use the GOT PLT. */
2632 eh->plt_got.refcount = 1;
2633 }
2634
cbe950e9
L		 2635 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2636 here if it is defined and referenced in a non-shared object. */
2637 if (h->type == STT_GNU_IFUNC
2638 && h->def_regular)
25e762b9 2639 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
2df3368d
L		 2640 &htab->readonly_dynrelocs_against_ifunc,
2641 plt_entry_size,
7b70956d 2642 plt_entry_size, 4);
04ebc307
L		 2643 /* Don't create the PLT entry if there are only function pointer
2644 relocations which can be resolved at run-time. */
cbe950e9 2645 else if (htab->elf.dynamic_sections_created
04ebc307
L		 2646 && (h->plt.refcount > eh->func_pointer_refcount
2647 || eh->plt_got.refcount > 0))
6725bdbf 2648 {
25070364
L		 2649 bfd_boolean use_plt_got;
2650
04ebc307
L		 2651 /* Clear the reference count of function pointer relocations
2652 if PLT is used. */
2653 eh->func_pointer_refcount = 0;
2654
8ded2ddc 2655 if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
25070364
L		 2656 {
2657 /* Don't use the regular PLT for DF_BIND_NOW. */
2658 h->plt.offset = (bfd_vma) -1;
2659
2660 /* Use the GOT PLT. */
2661 h->got.refcount = 1;
2662 eh->plt_got.refcount = 1;
2663 }
2664
2665 use_plt_got = eh->plt_got.refcount > 0;
dd7e64d4 2666
5a15f56f
AM		 2667 /* Make sure this symbol is output as a dynamic symbol.
2668 Undefined weak syms won't yet be marked as dynamic. */
2669 if (h->dynindx == -1
aec6b87e
L		 2670 && !h->forced_local
2671 && !resolved_to_zero)
5a15f56f 2672 {
c152c796 2673 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2674 return FALSE;
5a15f56f
AM		 2675 }
2676
0e1862bb 2677 if (bfd_link_pic (info)
4e795f50 2678 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2679 {
6de2ae4a 2680 asection *s = htab->elf.splt;
dd7e64d4 2681 asection *got_s = htab->plt_got;
6725bdbf 2682
7c1e8d3e
L		 2683 /* If this is the first .plt entry, make room for the special
2684 first entry. The .plt section is used by prelink to undo
2685 prelinking for dynamic relocations. */
2686 if (s->size == 0)
2687 s->size = plt_entry_size;
2688
dd7e64d4
L		 2689 if (use_plt_got)
2690 eh->plt_got.offset = got_s->size;
2691 else
7c1e8d3e 2692 h->plt.offset = s->size;
6725bdbf 2693
ced53ee5
AM		 2694 /* If this symbol is not defined in a regular file, and we are
2695 not generating a shared library, then set the symbol to this
2696 location in the .plt. This is required to make function
2697 pointers compare as equal between the normal executable and
2698 the shared library. */
0e1862bb 2699 if (! bfd_link_pic (info)
f5385ebf 2700 && !h->def_regular)
ced53ee5 2701 {
dd7e64d4
L		 2702 if (use_plt_got)
2703 {
2704 /* We need to make a call to the entry of the GOT PLT
2705 instead of regular PLT entry. */
2706 h->root.u.def.section = got_s;
2707 h->root.u.def.value = eh->plt_got.offset;
2708 }
2709 else
2710 {
2711 h->root.u.def.section = s;
2712 h->root.u.def.value = h->plt.offset;
2713 }
ced53ee5 2714 }
6725bdbf 2715
ced53ee5 2716 /* Make room for this entry. */
dd7e64d4
L		 2717 if (use_plt_got)
2718 got_s->size += sizeof (elf_i386_got_plt_entry);
2719 else
2720 {
2721 s->size += plt_entry_size;
6725bdbf 2722
dd7e64d4
L		 2723 /* We also need to make an entry in the .got.plt section,
2724 which will be placed in the .got section by the linker
2725 script. */
2726 htab->elf.sgotplt->size += 4;
6725bdbf 2727
aec6b87e
L		 2728 /* There should be no PLT relocation against resolved
2729 undefined weak symbol in executable. */
2730 if (!resolved_to_zero)
2731 {
2732 /* We also need to make an entry in the .rel.plt
2733 section. */
2734 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2735 htab->elf.srelplt->reloc_count++;
2736 }
dd7e64d4 2737 }
eac338cf 2738
23209a78 2739 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
0e1862bb 2740 && !bfd_link_pic (info))
eac338cf
PB		 2741 {
2742 /* VxWorks has a second set of relocations for each PLT entry
2743 in executables. They go in a separate relocation section,
2744 which is processed by the kernel loader. */
2745
2746 /* There are two relocations for the initial PLT entry: an
2747 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2748 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2749
25e762b9 2750 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2751 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2752
2753 /* There are two extra relocations for each subsequent PLT entry:
2754 an R_386_32 relocation for the GOT entry, and an R_386_32
2755 relocation for the PLT entry. */
2756
2757 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2758 }
6725bdbf 2759 }
ced53ee5
AM		 2760 else
2761 {
13f42277 2762 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2763 h->plt.offset = (bfd_vma) -1;
f5385ebf 2764 h->needs_plt = 0;
ced53ee5 2765 }
6725bdbf
AM		 2766 }
2767 else
2768 {
13f42277 2769 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2770 h->plt.offset = (bfd_vma) -1;
f5385ebf 2771 h->needs_plt = 0;
6725bdbf
AM		 2772 }
2773
67a4f2b7
AO		 2774 eh->tlsdesc_got = (bfd_vma) -1;
2775
37e55690 2776 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2777 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2778 if (h->got.refcount > 0
0e1862bb 2779 && bfd_link_executable (info)
13ae64f3 2780 && h->dynindx == -1
37e55690 2781 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2782 h->got.offset = (bfd_vma) -1;
13ae64f3 2783 else if (h->got.refcount > 0)
6725bdbf 2784 {
0ac8d2ca 2785 asection *s;
b34976b6 2786 bfd_boolean dyn;
13ae64f3 2787 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2788
5a15f56f
AM		 2789 /* Make sure this symbol is output as a dynamic symbol.
2790 Undefined weak syms won't yet be marked as dynamic. */
2791 if (h->dynindx == -1
aec6b87e
L		 2792 && !h->forced_local
2793 && !resolved_to_zero)
5a15f56f 2794 {
c152c796 2795 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2796 return FALSE;
5a15f56f
AM		 2797 }
2798
6de2ae4a 2799 s = htab->elf.sgot;
67a4f2b7
AO		 2800 if (GOT_TLS_GDESC_P (tls_type))
2801 {
6de2ae4a 2802 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2803 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2804 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2805 h->got.offset = (bfd_vma) -2;
2806 }
2807 if (! GOT_TLS_GDESC_P (tls_type)
2808 || GOT_TLS_GD_P (tls_type))
2809 {
2810 h->got.offset = s->size;
2811 s->size += 4;
2812 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2813 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2814 s->size += 4;
2815 }
ebe50bae 2816 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2817 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2818 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2819 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2820 need two), R_386_TLS_GD needs one if local symbol and two if
aec6b87e
L		 2821 global. No dynamic relocation against resolved undefined weak
2822 symbol in executable. */
37e55690 2823 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2824 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2825 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2826 || (tls_type & GOT_TLS_IE))
6de2ae4a 2827 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2828 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2829 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2830 else if (! GOT_TLS_GDESC_P (tls_type)
aec6b87e
L		 2831 && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2832 && !resolved_to_zero)
67a4f2b7 2833 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 2834 && (bfd_link_pic (info)
ef5aade5 2835 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2836 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2837 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2838 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2839 }
2840 else
51b64d56 2841 h->got.offset = (bfd_vma) -1;
6725bdbf 2842
5a15f56f 2843 if (eh->dyn_relocs == NULL)
b34976b6 2844 return TRUE;
5a15f56f 2845
0c715baa
AM		 2846 /* In the shared -Bsymbolic case, discard space allocated for
2847 dynamic pc-relative relocs against symbols which turn out to be
2848 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2849 space for pc-relative relocs that have become local due to symbol
2850 visibility changes. */
0c715baa 2851
0e1862bb 2852 if (bfd_link_pic (info))
5a15f56f 2853 {
09695f56
AM		 2854 /* The only reloc that uses pc_count is R_386_PC32, which will
2855 appear on a call or on something like ".long foo - .". We
2856 want calls to protected symbols to resolve directly to the
2857 function rather than going via the plt. If people want
2858 function pointer comparisons to work as expected then they
2859 should avoid writing assembly like ".long foo - .". */
2860 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2861 {
e03a8ed8 2862 struct elf_dyn_relocs **pp;
0c715baa
AM		 2863
2864 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2865 {
c3ce498c
L		 2866 p->count -= p->pc_count;
2867 p->pc_count = 0;
0c715baa
AM		 2868 if (p->count == 0)
2869 *pp = p->next;
2870 else
2871 pp = &p->next;
2872 }
5a15f56f 2873 }
4e795f50 2874
23209a78 2875 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2876 {
e03a8ed8 2877 struct elf_dyn_relocs **pp;
3348747a
NS		 2878 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2879 {
2880 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2881 *pp = p->next;
2882 else
2883 pp = &p->next;
2884 }
2885 }
2886
4e795f50 2887 /* Also discard relocs on undefined weak syms with non-default
aec6b87e 2888 visibility or in PIE. */
22d606e9 2889 if (eh->dyn_relocs != NULL
c353e543 2890 && h->root.type == bfd_link_hash_undefweak)
22d606e9 2891 {
aec6b87e
L		 2892 /* Undefined weak symbol is never bound locally in shared
2893 library. */
2894 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2895 || resolved_to_zero)
2896 {
2897 if (h->non_got_ref)
2898 {
2899 /* Keep dynamic non-GOT/non-PLT relocation so that we
2900 can branch to 0 without PLT. */
2901 struct elf_dyn_relocs **pp;
2902
2903 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2904 if (p->pc_count == 0)
2905 *pp = p->next;
2906 else
2907 {
2908 /* Remove non-R_386_PC32 relocation. */
2909 p->count = p->pc_count;
2910 pp = &p->next;
2911 }
22d606e9 2912
aec6b87e
L		 2913 if (eh->dyn_relocs != NULL)
2914 {
2915 /* Make sure undefined weak symbols are output
2916 as dynamic symbols in PIEs for dynamic non-GOT
2917 non-PLT reloations. */
2918 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2919 return FALSE;
2920 }
2921 }
2922 else
2923 eh->dyn_relocs = NULL;
2924 }
22d606e9
AM		 2925 else if (h->dynindx == -1
2926 && !h->forced_local)
2927 {
2928 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2929 return FALSE;
2930 }
2931 }
0c715baa 2932 }
a23b6845 2933 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2934 {
2935 /* For the non-shared case, discard space for relocs against
2936 symbols which turn out to need copy relocs or are not
04ebc307
L		 2937 dynamic. Keep dynamic relocations for run-time function
2938 pointer initialization. */
0c715baa 2939
aec6b87e
L		 2940 if ((!h->non_got_ref
2941 || eh->func_pointer_refcount > 0
2942 || (h->root.type == bfd_link_hash_undefweak
2943 && !resolved_to_zero))
f5385ebf
AM		 2944 && ((h->def_dynamic
2945 && !h->def_regular)
ebe50bae 2946 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2947 && (h->root.type == bfd_link_hash_undefweak
2948 || h->root.type == bfd_link_hash_undefined))))
2949 {
2950 /* Make sure this symbol is output as a dynamic symbol.
2951 Undefined weak syms won't yet be marked as dynamic. */
2952 if (h->dynindx == -1
aec6b87e
L		 2953 && !h->forced_local
2954 && !resolved_to_zero)
0c715baa 2955 {
c152c796 2956 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2957 return FALSE;
0c715baa 2958 }
5a15f56f 2959
0c715baa
AM		 2960 /* If that succeeded, we know we'll be keeping all the
2961 relocs. */
2962 if (h->dynindx != -1)
2963 goto keep;
2964 }
2965
2966 eh->dyn_relocs = NULL;
04ebc307 2967 eh->func_pointer_refcount = 0;
0c715baa 2968
ec338859 2969 keep: ;
5a15f56f
AM		 2970 }
2971
0c715baa
AM		 2972 /* Finally, allocate space. */
2973 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2974 {
e7c33416
NC		 2975 asection *sreloc;
2976
cbe950e9 2977 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2978
2979 BFD_ASSERT (sreloc != NULL);
eea6121a 2980 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2981 }
2982
b34976b6 2983 return TRUE;
6725bdbf
AM		 2984}
2985
c25bc9fc
L		 2986/* Allocate space in .plt, .got and associated reloc sections for
2987 local dynamic relocs. */
2988
2989static bfd_boolean
2990elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2991{
2992 struct elf_link_hash_entry *h
2993 = (struct elf_link_hash_entry *) *slot;
2994
2995 if (h->type != STT_GNU_IFUNC
2996 || !h->def_regular
2997 || !h->ref_regular
2998 || !h->forced_local
2999 || h->root.type != bfd_link_hash_defined)
3000 abort ();
3001
3002 return elf_i386_allocate_dynrelocs (h, inf);
3003}
3004
0c715baa
AM		 3005/* Find any dynamic relocs that apply to read-only sections. */
3006
b34976b6 3007static bfd_boolean
eb4ff4d6 3008elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 3009{
3010 struct elf_i386_link_hash_entry *eh;
e03a8ed8 3011 struct elf_dyn_relocs *p;
0c715baa 3012
aa715242
L		 3013 /* Skip local IFUNC symbols. */
3014 if (h->forced_local && h->type == STT_GNU_IFUNC)
3015 return TRUE;
3016
0c715baa
AM		 3017 eh = (struct elf_i386_link_hash_entry *) h;
3018 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3019 {
3020 asection *s = p->sec->output_section;
3021
3022 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3023 {
3024 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3025
3026 info->flags |= DF_TEXTREL;
3027
0e1862bb 3028 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 3029 || info->error_textrel)
3030 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 3031 p->sec->owner, h->root.root.string,
3032 p->sec);
3033
0c715baa 3034 /* Not an error, just cut short the traversal. */
b34976b6 3035 return FALSE;
0c715baa
AM		 3036 }
3037 }
b34976b6 3038 return TRUE;
0c715baa
AM		 3039}
3040
c175a657 3041/* Convert load via the GOT slot to load immediate. */
daa67607
L		 3042
3043static bfd_boolean
02a86693 3044elf_i386_convert_load (bfd *abfd, asection *sec,
a6af384b 3045 struct bfd_link_info *link_info)
daa67607 3046{
c175a657 3047 struct elf_i386_link_hash_table *htab;
daa67607
L		 3048 Elf_Internal_Shdr *symtab_hdr;
3049 Elf_Internal_Rela *internal_relocs;
3050 Elf_Internal_Rela *irel, *irelend;
3051 bfd_byte *contents;
c175a657 3052 bfd_boolean changed;
daa67607
L		 3053 bfd_signed_vma *local_got_refcounts;
3054
3055 /* Don't even try to convert non-ELF outputs. */
3056 if (!is_elf_hash_table (link_info->hash))
3057 return FALSE;
3058
c1d11331 3059 /* Nothing to do if there is no need or no output. */
daa67607 3060 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
02a86693 3061 || sec->need_convert_load == 0
c8831961 3062 || bfd_is_abs_section (sec->output_section))
daa67607
L		 3063 return TRUE;
3064
3065 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3066
3067 /* Load the relocations for this section. */
3068 internal_relocs = (_bfd_elf_link_read_relocs
3069 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
3070 link_info->keep_memory));
3071 if (internal_relocs == NULL)
3072 return FALSE;
3073
c175a657 3074 changed = FALSE;
daa67607 3075 htab = elf_i386_hash_table (link_info);
daa67607
L		 3076 local_got_refcounts = elf_local_got_refcounts (abfd);
3077
3078 /* Get the section contents. */
3079 if (elf_section_data (sec)->this_hdr.contents != NULL)
3080 contents = elf_section_data (sec)->this_hdr.contents;
3081 else
3082 {
3083 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
3084 goto error_return;
3085 }
3086
3087 irelend = internal_relocs + sec->reloc_count;
3088 for (irel = internal_relocs; irel < irelend; irel++)
3089 {
3090 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
c175a657 3091 unsigned int r_symndx;
daa67607 3092 struct elf_link_hash_entry *h;
c175a657 3093 bfd_boolean converted;
daa67607 3094
7d4d9709
L		 3095 /* Don't convert R_386_GOT32 since we can't tell if it is applied
3096 to "mov $foo@GOT, %reg" which isn't a load via GOT. */
3097 if (r_type != R_386_GOT32X)
daa67607
L		 3098 continue;
3099
c175a657 3100 r_symndx = ELF32_R_SYM (irel->r_info);
02a86693 3101 if (r_symndx < symtab_hdr->sh_info)
c175a657
L		 3102 h = elf_i386_get_local_sym_hash (htab, sec->owner,
3103 (const Elf_Internal_Rela *) irel,
3104 FALSE);
3105 else
02a86693 3106 {
c175a657
L		 3107 h = elf_sym_hashes (abfd)[r_symndx - symtab_hdr->sh_info];
3108 while (h->root.type == bfd_link_hash_indirect
3109 || h->root.type == bfd_link_hash_warning)
3110 h = (struct elf_link_hash_entry *) h->root.u.i.link;
daa67607
L		 3111 }
3112
02a86693 3113 /* STT_GNU_IFUNC must keep GOT32 relocations. */
c175a657 3114 if (h != NULL && h->type == STT_GNU_IFUNC)
02a86693
L		 3115 continue;
3116
c175a657
L		 3117 converted = FALSE;
3118 if (!elf_i386_convert_load_reloc (abfd, symtab_hdr, contents,
3119 irel, h, &converted, link_info))
3120 goto error_return;
bae420ef 3121
c175a657 3122 if (converted)
02a86693 3123 {
c175a657
L		 3124 changed = converted;
3125 if (h)
02a86693 3126 {
c175a657
L		 3127 if (h->got.refcount > 0)
3128 h->got.refcount -= 1;
02a86693 3129 }
c175a657 3130 else
02a86693 3131 {
c175a657
L		 3132 if (local_got_refcounts != NULL
3133 && local_got_refcounts[r_symndx] > 0)
3134 local_got_refcounts[r_symndx] -= 1;
02a86693 3135 }
daa67607
L		 3136 }
3137 }
3138
3139 if (contents != NULL
3140 && elf_section_data (sec)->this_hdr.contents != contents)
3141 {
c175a657 3142 if (!changed && !link_info->keep_memory)
daa67607
L		 3143 free (contents);
3144 else
3145 {
3146 /* Cache the section contents for elf_link_input_bfd. */
3147 elf_section_data (sec)->this_hdr.contents = contents;
3148 }
3149 }
3150
3151 if (elf_section_data (sec)->relocs != internal_relocs)
3152 {
c175a657 3153 if (!changed)
daa67607
L		 3154 free (internal_relocs);
3155 else
3156 elf_section_data (sec)->relocs = internal_relocs;
3157 }
3158
3159 return TRUE;
3160
3161 error_return:
3162 if (contents != NULL
3163 && elf_section_data (sec)->this_hdr.contents != contents)
3164 free (contents);
3165 if (internal_relocs != NULL
3166 && elf_section_data (sec)->relocs != internal_relocs)
3167 free (internal_relocs);
3168 return FALSE;
3169}
3170
252b5132
RH		 3171/* Set the sizes of the dynamic sections. */
3172
b34976b6 3173static bfd_boolean
23209a78 3174elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 3175{
6725bdbf 3176 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3177 bfd *dynobj;
3178 asection *s;
b34976b6 3179 bfd_boolean relocs;
0c715baa 3180 bfd *ibfd;
252b5132 3181
6725bdbf 3182 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3183 if (htab == NULL)
3184 return FALSE;
ebe50bae 3185 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 3186 if (dynobj == NULL)
3187 abort ();
252b5132 3188
0c715baa
AM		 3189 /* Set up .got offsets for local syms, and space for local dynamic
3190 relocs. */
c72f2fb2 3191 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 3192 {
3193 bfd_signed_vma *local_got;
3194 bfd_signed_vma *end_local_got;
13ae64f3 3195 char *local_tls_type;
67a4f2b7 3196 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 3197 bfd_size_type locsymcount;
3198 Elf_Internal_Shdr *symtab_hdr;
3199 asection *srel;
6725bdbf 3200
0ffa91dd 3201 if (! is_i386_elf (ibfd))
161d71a6 3202 continue;
6725bdbf 3203
0c715baa
AM		 3204 for (s = ibfd->sections; s != NULL; s = s->next)
3205 {
e03a8ed8 3206 struct elf_dyn_relocs *p;
0c715baa 3207
02a86693 3208 if (!elf_i386_convert_load (ibfd, s, info))
daa67607
L		 3209 return FALSE;
3210
e03a8ed8 3211 for (p = ((struct elf_dyn_relocs *)
e81d3500 3212 elf_section_data (s)->local_dynrel);
ec338859
AM		 3213 p != NULL;
3214 p = p->next)
0c715baa 3215 {
ec338859
AM		 3216 if (!bfd_is_abs_section (p->sec)
3217 && bfd_is_abs_section (p->sec->output_section))
3218 {
3219 /* Input section has been discarded, either because
3220 it is a copy of a linkonce section or due to
3221 linker script /DISCARD/, so we'll be discarding
3222 the relocs too. */
3223 }
23209a78 3224 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 3225 && strcmp (p->sec->output_section->name,
3226 ".tls_vars") == 0)
3227 {
3228 /* Relocations in vxworks .tls_vars sections are
3229 handled specially by the loader. */
3230 }
248866a8 3231 else if (p->count != 0)
ec338859
AM		 3232 {
3233 srel = elf_section_data (p->sec)->sreloc;
eea6121a 3234 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 3235 if ((p->sec->output_section->flags & SEC_READONLY) != 0
3236 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 3237 {
3238 info->flags |= DF_TEXTREL;
0e1862bb 3239 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 3240 || info->error_textrel)
3241 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 3242 p->sec->owner, p->sec);
b70321a2 3243 }
ec338859 3244 }
0c715baa
AM		 3245 }
3246 }
3247
3248 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 3249 if (!local_got)
3250 continue;
6725bdbf 3251
0ffa91dd 3252 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 3253 locsymcount = symtab_hdr->sh_info;
3254 end_local_got = local_got + locsymcount;
13ae64f3 3255 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 3256 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 3257 s = htab->elf.sgot;
3258 srel = htab->elf.srelgot;
67a4f2b7
AO		 3259 for (; local_got < end_local_got;
3260 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 3261 {
67a4f2b7 3262 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 3263 if (*local_got > 0)
6725bdbf 3264 {
67a4f2b7
AO		 3265 if (GOT_TLS_GDESC_P (*local_tls_type))
3266 {
6de2ae4a 3267 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 3268 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 3269 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 3270 *local_got = (bfd_vma) -2;
3271 }
3272 if (! GOT_TLS_GDESC_P (*local_tls_type)
3273 || GOT_TLS_GD_P (*local_tls_type))
3274 {
3275 *local_got = s->size;
3276 s->size += 4;
3277 if (GOT_TLS_GD_P (*local_tls_type)
3278 || *local_tls_type == GOT_TLS_IE_BOTH)
3279 s->size += 4;
3280 }
0e1862bb 3281 if (bfd_link_pic (info)
67a4f2b7 3282 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 3283 || (*local_tls_type & GOT_TLS_IE))
3284 {
3285 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 3286 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 3287 else if (GOT_TLS_GD_P (*local_tls_type)
3288 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 3289 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 3290 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 3291 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 3292 }
6725bdbf 3293 }
161d71a6
L		 3294 else
3295 *local_got = (bfd_vma) -1;
6725bdbf 3296 }
252b5132 3297 }
6725bdbf 3298
13ae64f3
JJ		 3299 if (htab->tls_ldm_got.refcount > 0)
3300 {
3301 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
3302 relocs. */
6de2ae4a
L		 3303 htab->tls_ldm_got.offset = htab->elf.sgot->size;
3304 htab->elf.sgot->size += 8;
3305 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 3306 }
3307 else
3308 htab->tls_ldm_got.offset = -1;
3309
0c715baa
AM		 3310 /* Allocate global sym .plt and .got entries, and space for global
3311 sym dynamic relocs. */
eb4ff4d6 3312 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 3313
c25bc9fc
L		 3314 /* Allocate .plt and .got entries, and space for local symbols. */
3315 htab_traverse (htab->loc_hash_table,
3316 elf_i386_allocate_local_dynrelocs,
3317 info);
3318
67a4f2b7
AO		 3319 /* For every jump slot reserved in the sgotplt, reloc_count is
3320 incremented. However, when we reserve space for TLS descriptors,
3321 it's not incremented, so in order to compute the space reserved
3322 for them, it suffices to multiply the reloc count by the jump
e1f98742 3323 slot size.
caa0075c 3324
e1f98742
L		 3325 PR ld/13302: We start next_irelative_index at the end of .rela.plt
3326 so that R_386_IRELATIVE entries come last. */
6de2ae4a 3327 if (htab->elf.srelplt)
e1f98742
L		 3328 {
3329 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
3330 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
3331 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
3332 }
3333 else if (htab->elf.irelplt)
3334 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
3335
67a4f2b7 3336
a7b16ceb
L		 3337 if (htab->elf.sgotplt)
3338 {
3339 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 3340 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 3341 if ((htab->elf.hgot == NULL
3342 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 3343 && (htab->elf.sgotplt->size
3344 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 3345 && (htab->elf.splt == NULL
3346 || htab->elf.splt->size == 0)
3347 && (htab->elf.sgot == NULL
3348 || htab->elf.sgot->size == 0)
3349 && (htab->elf.iplt == NULL
3350 || htab->elf.iplt->size == 0)
3351 && (htab->elf.igotplt == NULL
3352 || htab->elf.igotplt->size == 0))
3353 htab->elf.sgotplt->size = 0;
3354 }
3355
9a2a56cc
AM		 3356
3357 if (htab->plt_eh_frame != NULL
3358 && htab->elf.splt != NULL
3359 && htab->elf.splt->size != 0
3360 && !bfd_is_abs_section (htab->elf.splt->output_section)
3361 && _bfd_elf_eh_frame_present (info))
3362 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
3363
5a15f56f
AM		 3364 /* We now have determined the sizes of the various dynamic sections.
3365 Allocate memory for them. */
b34976b6 3366 relocs = FALSE;
252b5132
RH		 3367 for (s = dynobj->sections; s != NULL; s = s->next)
3368 {
eac338cf
PB		 3369 bfd_boolean strip_section = TRUE;
3370
252b5132
RH		 3371 if ((s->flags & SEC_LINKER_CREATED) == 0)
3372 continue;
3373
6de2ae4a 3374 if (s == htab->elf.splt
9a2a56cc 3375 || s == htab->elf.sgot)
252b5132 3376 {
6725bdbf
AM		 3377 /* Strip this section if we don't need it; see the
3378 comment below. */
eac338cf
PB		 3379 /* We'd like to strip these sections if they aren't needed, but if
3380 we've exported dynamic symbols from them we must leave them.
3381 It's too late to tell BFD to get rid of the symbols. */
3382
7325306f 3383 if (htab->elf.hplt != NULL)
eac338cf 3384 strip_section = FALSE;
252b5132 3385 }
9a2a56cc
AM		 3386 else if (s == htab->elf.sgotplt
3387 || s == htab->elf.iplt
3388 || s == htab->elf.igotplt
dd7e64d4 3389 || s == htab->plt_got
9a2a56cc
AM		 3390 || s == htab->plt_eh_frame
3391 || s == htab->sdynbss)
3392 {
3393 /* Strip these too. */
3394 }
0112cd26 3395 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3396 {
6de2ae4a
L		 3397 if (s->size != 0
3398 && s != htab->elf.srelplt
3399 && s != htab->srelplt2)
b34976b6 3400 relocs = TRUE;
252b5132 3401
0ac8d2ca
AM		 3402 /* We use the reloc_count field as a counter if we need
3403 to copy relocs into the output file. */
5ae0bfb6 3404 s->reloc_count = 0;
252b5132 3405 }
6725bdbf 3406 else
252b5132
RH		 3407 {
3408 /* It's not one of our sections, so don't allocate space. */
3409 continue;
3410 }
3411
c456f082 3412 if (s->size == 0)
252b5132 3413 {
0ac8d2ca
AM		 3414 /* If we don't need this section, strip it from the
3415 output file. This is mostly to handle .rel.bss and
3416 .rel.plt. We must create both sections in
3417 create_dynamic_sections, because they must be created
3418 before the linker maps input sections to output
3419 sections. The linker does that before
3420 adjust_dynamic_symbol is called, and it is that
3421 function which decides whether anything needs to go
3422 into these sections. */
c456f082
AM		 3423 if (strip_section)
3424 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3425 continue;
3426 }
3427
c456f082
AM		 3428 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3429 continue;
3430
f69da49f
AM		 3431 /* Allocate memory for the section contents. We use bfd_zalloc
3432 here in case unused entries are not reclaimed before the
3433 section's contents are written out. This should not happen,
3434 but this way if it does, we get a R_386_NONE reloc instead
3435 of garbage. */
a50b1753 3436 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3437 if (s->contents == NULL)
b34976b6 3438 return FALSE;
252b5132
RH		 3439 }
3440
e41b3a13 3441 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3442 && htab->plt_eh_frame->contents != NULL)
3443 {
3444 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3445 sizeof (elf_i386_eh_frame_plt));
3446 bfd_put_32 (dynobj, htab->elf.splt->size,
3447 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3448 }
e41b3a13 3449
ebe50bae 3450 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3451 {
3452 /* Add some entries to the .dynamic section. We fill in the
3453 values later, in elf_i386_finish_dynamic_sections, but we
3454 must add the entries now so that we get the correct size for
3455 the .dynamic section. The DT_DEBUG entry is filled in by the
3456 dynamic linker and used by the debugger. */
dc810e39 3457#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3458 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3459
0e1862bb 3460 if (bfd_link_executable (info))
252b5132 3461 {
dc810e39 3462 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3463 return FALSE;
252b5132
RH		 3464 }
3465
6de2ae4a 3466 if (htab->elf.splt->size != 0)
252b5132 3467 {
7c1e8d3e
L		 3468 /* DT_PLTGOT is used by prelink even if there is no PLT
3469 relocation. */
3470 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3471 return FALSE;
7c1e8d3e
L		 3472
3473 if (htab->elf.srelplt->size != 0)
3474 {
3475 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3476 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3477 || !add_dynamic_entry (DT_JMPREL, 0))
3478 return FALSE;
3479 }
252b5132
RH		 3480 }
3481
3482 if (relocs)
3483 {
dc810e39
AM		 3484 if (!add_dynamic_entry (DT_REL, 0)
3485 || !add_dynamic_entry (DT_RELSZ, 0)
3486 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3487 return FALSE;
252b5132 3488
0c715baa
AM		 3489 /* If any dynamic relocs apply to a read-only section,
3490 then we need a DT_TEXTREL entry. */
248866a8 3491 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3492 elf_link_hash_traverse (&htab->elf,
3493 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3494
3495 if ((info->flags & DF_TEXTREL) != 0)
3496 {
2df3368d 3497 if (htab->readonly_dynrelocs_against_ifunc)
8efa2874
L		 3498 {
3499 info->callbacks->einfo
3500 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
3501 bfd_set_error (bfd_error_bad_value);
3502 return FALSE;
3503 }
3504
0c715baa 3505 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3506 return FALSE;
0c715baa 3507 }
252b5132 3508 }
23209a78 3509 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3510 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3511 return FALSE;
252b5132 3512 }
dc810e39 3513#undef add_dynamic_entry
252b5132 3514
b34976b6 3515 return TRUE;
252b5132
RH		 3516}
3517
67a4f2b7
AO		 3518static bfd_boolean
3519elf_i386_always_size_sections (bfd *output_bfd,
3520 struct bfd_link_info *info)
3521{
3522 asection *tls_sec = elf_hash_table (info)->tls_sec;
3523
3524 if (tls_sec)
3525 {
3526 struct elf_link_hash_entry *tlsbase;
3527
3528 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3529 "_TLS_MODULE_BASE_",
3530 FALSE, FALSE, FALSE);
3531
3532 if (tlsbase && tlsbase->type == STT_TLS)
3533 {
4dfe6ac6 3534 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3535 struct bfd_link_hash_entry *bh = NULL;
3536 const struct elf_backend_data *bed
3537 = get_elf_backend_data (output_bfd);
3538
4dfe6ac6
NC		 3539 htab = elf_i386_hash_table (info);
3540 if (htab == NULL)
3541 return FALSE;
3542
67a4f2b7
AO		 3543 if (!(_bfd_generic_link_add_one_symbol
3544 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3545 tls_sec, 0, NULL, FALSE,
3546 bed->collect, &bh)))
3547 return FALSE;
9f03412a 3548
4dfe6ac6 3549 htab->tls_module_base = bh;
9f03412a 3550
67a4f2b7
AO		 3551 tlsbase = (struct elf_link_hash_entry *)bh;
3552 tlsbase->def_regular = 1;
3553 tlsbase->other = STV_HIDDEN;
576fa883 3554 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3555 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3556 }
3557 }
3558
3559 return TRUE;
3560}
3561
38701953
AM		 3562/* Set the correct type for an x86 ELF section. We do this by the
3563 section name, which is a hack, but ought to work. */
3564
b34976b6 3565static bfd_boolean
55fd94b0
AM		 3566elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3567 Elf_Internal_Shdr *hdr,
3568 asection *sec)
38701953 3569{
91d6fa6a 3570 const char *name;
38701953
AM		 3571
3572 name = bfd_get_section_name (abfd, sec);
3573
3574 /* This is an ugly, but unfortunately necessary hack that is
3575 needed when producing EFI binaries on x86. It tells
3576 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3577 containing ELF relocation info. We need this hack in order to
3578 be able to generate ELF binaries that can be translated into
3579 EFI applications (which are essentially COFF objects). Those
3580 files contain a COFF ".reloc" section inside an ELFNN object,
3581 which would normally cause BFD to segfault because it would
3582 attempt to interpret this section as containing relocation
3583 entries for section "oc". With this hack enabled, ".reloc"
3584 will be treated as a normal data section, which will avoid the
3585 segfault. However, you won't be able to create an ELFNN binary
3586 with a section named "oc" that needs relocations, but that's
3587 the kind of ugly side-effects you get when detecting section
3588 types based on their names... In practice, this limitation is
3589 unlikely to bite. */
3590 if (strcmp (name, ".reloc") == 0)
3591 hdr->sh_type = SHT_PROGBITS;
3592
b34976b6 3593 return TRUE;
38701953
AM		 3594}
3595
9f03412a
AO		 3596/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3597 executables. Rather than setting it to the beginning of the TLS
3598 section, we have to set it to the end. This function may be called
3599 multiple times, it is idempotent. */
3600
3601static void
eb4ff4d6 3602elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3603{
4dfe6ac6 3604 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3605 struct bfd_link_hash_entry *base;
3606
0e1862bb 3607 if (!bfd_link_executable (info))
9f03412a
AO		 3608 return;
3609
4dfe6ac6
NC		 3610 htab = elf_i386_hash_table (info);
3611 if (htab == NULL)
3612 return;
9f03412a 3613
4dfe6ac6
NC		 3614 base = htab->tls_module_base;
3615 if (base == NULL)
9f03412a
AO		 3616 return;
3617
4dfe6ac6 3618 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3619}
3620
13ae64f3
JJ		 3621/* Return the base VMA address which should be subtracted from real addresses
3622 when resolving @dtpoff relocation.
3623 This is PT_TLS segment p_vaddr. */
3624
3625static bfd_vma
eb4ff4d6 3626elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3627{
e1918d23
AM		 3628 /* If tls_sec is NULL, we should have signalled an error already. */
3629 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3630 return 0;
e1918d23 3631 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3632}
3633
3634/* Return the relocation value for @tpoff relocation
3635 if STT_TLS virtual address is ADDRESS. */
3636
3637static bfd_vma
eb4ff4d6 3638elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3639{
e1918d23 3640 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3641 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3642 bfd_vma static_tls_size;
13ae64f3 3643
e1918d23
AM		 3644 /* If tls_sec is NULL, we should have signalled an error already. */
3645 if (htab->tls_sec == NULL)
6a30718d 3646 return 0;
7dc98aea
RO		 3647
3648 /* Consider special static TLS alignment requirements. */
3649 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3650 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3651}
3652
252b5132
RH		 3653/* Relocate an i386 ELF section. */
3654
b34976b6 3655static bfd_boolean
55fd94b0
AM		 3656elf_i386_relocate_section (bfd *output_bfd,
3657 struct bfd_link_info *info,
3658 bfd *input_bfd,
3659 asection *input_section,
3660 bfd_byte *contents,
3661 Elf_Internal_Rela *relocs,
3662 Elf_Internal_Sym *local_syms,
3663 asection **local_sections)
252b5132 3664{
6725bdbf 3665 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3666 Elf_Internal_Shdr *symtab_hdr;
3667 struct elf_link_hash_entry **sym_hashes;
3668 bfd_vma *local_got_offsets;
67a4f2b7 3669 bfd_vma *local_tlsdesc_gotents;
252b5132 3670 Elf_Internal_Rela *rel;
60f2e42e 3671 Elf_Internal_Rela *wrel;
252b5132 3672 Elf_Internal_Rela *relend;
3348747a 3673 bfd_boolean is_vxworks_tls;
25e762b9 3674 unsigned plt_entry_size;
252b5132 3675
0ffa91dd 3676 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3677
c337a162
L		 3678 /* Skip if check_relocs failed. */
3679 if (input_section->check_relocs_failed)
3680 return FALSE;
3681
6725bdbf 3682 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3683 if (htab == NULL)
3684 return FALSE;
0ffa91dd 3685 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3686 sym_hashes = elf_sym_hashes (input_bfd);
3687 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3688 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3689 /* We have to handle relocations in vxworks .tls_vars sections
3690 specially, because the dynamic loader is 'weird'. */
23209a78 3691 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
0e1862bb 3692 && bfd_link_pic (info)
3348747a
NS		 3693 && !strcmp (input_section->output_section->name,
3694 ".tls_vars"));
252b5132 3695
eb4ff4d6 3696 elf_i386_set_tls_module_base (info);
9f03412a 3697
25e762b9
RM		 3698 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3699
60f2e42e 3700 rel = wrel = relocs;
252b5132 3701 relend = relocs + input_section->reloc_count;
60f2e42e 3702 for (; rel < relend; wrel++, rel++)
252b5132 3703 {
13ae64f3 3704 unsigned int r_type;
252b5132
RH		 3705 reloc_howto_type *howto;
3706 unsigned long r_symndx;
3707 struct elf_link_hash_entry *h;
dd7e64d4 3708 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3709 Elf_Internal_Sym *sym;
3710 asection *sec;
dd7e64d4 3711 bfd_vma off, offplt, plt_offset;
252b5132 3712 bfd_vma relocation;
b34976b6 3713 bfd_boolean unresolved_reloc;
252b5132 3714 bfd_reloc_status_type r;
1b452ec6 3715 unsigned int indx;
13ae64f3 3716 int tls_type;
1788fc08 3717 bfd_vma st_size;
dd7e64d4 3718 asection *resolved_plt;
aec6b87e 3719 bfd_boolean resolved_to_zero;
252b5132
RH		 3720
3721 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3722 if (r_type == R_386_GNU_VTINHERIT
3723 || r_type == R_386_GNU_VTENTRY)
18954b29
L		 3724 {
3725 if (wrel != rel)
3726 *wrel = *rel;
3727 continue;
3728 }
dc47f327 3729
55fd94b0 3730 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3731 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3732 >= R_386_ext - R_386_standard)
3733 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520 3734 >= R_386_ext2 - R_386_ext))
252b5132 3735 {
6ba842b6 3736 (*_bfd_error_handler)
d003868e
AM		 3737 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3738 input_bfd, input_section, r_type);
252b5132 3739 bfd_set_error (bfd_error_bad_value);
b34976b6 3740 return FALSE;
252b5132 3741 }
1b452ec6 3742 howto = elf_howto_table + indx;
252b5132
RH		 3743
3744 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3745 h = NULL;
3746 sym = NULL;
3747 sec = NULL;
b34976b6 3748 unresolved_reloc = FALSE;
252b5132
RH		 3749 if (r_symndx < symtab_hdr->sh_info)
3750 {
3751 sym = local_syms + r_symndx;
3752 sec = local_sections[r_symndx];
3753 relocation = (sec->output_section->vma
3754 + sec->output_offset
3755 + sym->st_value);
1788fc08 3756 st_size = sym->st_size;
ab96bf03
AM		 3757
3758 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3759 && ((sec->flags & SEC_MERGE) != 0
0e1862bb 3760 || (bfd_link_relocatable (info)
ab96bf03 3761 && sec->output_offset != 0)))
f8df10f4 3762 {
f8df10f4 3763 bfd_vma addend;
4a335f3d 3764 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3765
4a335f3d 3766 switch (howto->size)
f8df10f4 3767 {
4a335f3d
AM		 3768 case 0:
3769 addend = bfd_get_8 (input_bfd, where);
3770 if (howto->pc_relative)
3771 {
3772 addend = (addend ^ 0x80) - 0x80;
3773 addend += 1;
3774 }
3775 break;
3776 case 1:
3777 addend = bfd_get_16 (input_bfd, where);
3778 if (howto->pc_relative)
3779 {
3780 addend = (addend ^ 0x8000) - 0x8000;
3781 addend += 2;
3782 }
3783 break;
3784 case 2:
3785 addend = bfd_get_32 (input_bfd, where);
3786 if (howto->pc_relative)
3787 {
3788 addend = (addend ^ 0x80000000) - 0x80000000;
3789 addend += 4;
3790 }
3791 break;
3792 default:
3793 abort ();
f8df10f4
JJ		 3794 }
3795
0e1862bb 3796 if (bfd_link_relocatable (info))
ab96bf03
AM		 3797 addend += sec->output_offset;
3798 else
3799 {
3800 asection *msec = sec;
3801 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3802 addend);
3803 addend -= relocation;
3804 addend += msec->output_section->vma + msec->output_offset;
3805 }
4a335f3d
AM		 3806
3807 switch (howto->size)
3808 {
3809 case 0:
16a10388 3810 /* FIXME: overflow checks. */
4a335f3d
AM		 3811 if (howto->pc_relative)
3812 addend -= 1;
3813 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3814 break;
3815 case 1:
3816 if (howto->pc_relative)
3817 addend -= 2;
3818 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3819 break;
3820 case 2:
3821 if (howto->pc_relative)
3822 addend -= 4;
3823 bfd_put_32 (input_bfd, addend, where);
3824 break;
3825 }
f8df10f4 3826 }
0e1862bb 3827 else if (!bfd_link_relocatable (info)
1f85278f 3828 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3829 {
3830 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3831 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3832 FALSE);
c25bc9fc
L		 3833 if (h == NULL)
3834 abort ();
3835
23209a78 3836 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3837 h->root.u.def.value = sym->st_value;
3838 h->root.u.def.section = sec;
3839 }
252b5132
RH		 3840 }
3841 else
3842 {
3d540e93 3843 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3844 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3845
b2a8e766
AM		 3846 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3847 r_symndx, symtab_hdr, sym_hashes,
3848 h, sec, relocation,
62d887d4 3849 unresolved_reloc, warned, ignored);
1788fc08 3850 st_size = h->size;
252b5132
RH		 3851 }
3852
dbaa2011 3853 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 3854 {
3855 _bfd_clear_contents (howto, input_bfd, input_section,
3856 contents + rel->r_offset);
3857 wrel->r_offset = rel->r_offset;
3858 wrel->r_info = 0;
3859 wrel->r_addend = 0;
3860
3861 /* For ld -r, remove relocations in debug sections against
3862 sections defined in discarded sections. Not done for
3863 eh_frame editing code expects to be present. */
3864 if (bfd_link_relocatable (info)
3865 && (input_section->flags & SEC_DEBUGGING))
3866 wrel--;
3867
3868 continue;
3869 }
9635fe29 3870
0e1862bb 3871 if (bfd_link_relocatable (info))
2d5da473
L		 3872 {
3873 if (wrel != rel)
3874 *wrel = *rel;
3875 continue;
3876 }
ab96bf03 3877
cbe950e9
L		 3878 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3879 it here if it is defined in a non-shared object. */
3880 if (h != NULL
3881 && h->type == STT_GNU_IFUNC
3882 && h->def_regular)
3883 {
3884 asection *plt, *gotplt, *base_got;
3885 bfd_vma plt_index;
4c544807 3886 const char *name;
cbe950e9 3887
97dc35c8
L		 3888 if ((input_section->flags & SEC_ALLOC) == 0)
3889 {
3890 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3891 sections because such sections are not SEC_ALLOC and
3892 thus ld.so will not process them. */
3893 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3894 continue;
97dc35c8
L		 3895 abort ();
3896 }
3897 else if (h->plt.offset == (bfd_vma) -1)
cbe950e9
L		 3898 abort ();
3899
3900 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3901 if (htab->elf.splt != NULL)
cbe950e9 3902 {
6de2ae4a
L		 3903 plt = htab->elf.splt;
3904 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3905 }
3906 else
3907 {
6de2ae4a
L		 3908 plt = htab->elf.iplt;
3909 gotplt = htab->elf.igotplt;
cbe950e9
L		 3910 }
3911
3912 relocation = (plt->output_section->vma
3913 + plt->output_offset + h->plt.offset);
3914
3915 switch (r_type)
3916 {
3917 default:
4c544807
L		 3918 if (h->root.root.string)
3919 name = h->root.root.string;
3920 else
3921 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3922 NULL);
cbe950e9
L		 3923 (*_bfd_error_handler)
3924 (_("%B: relocation %s against STT_GNU_IFUNC "
3925 "symbol `%s' isn't handled by %s"), input_bfd,
3926 elf_howto_table[r_type].name,
4c544807 3927 name, __FUNCTION__);
cbe950e9
L		 3928 bfd_set_error (bfd_error_bad_value);
3929 return FALSE;
3930
3931 case R_386_32:
710ab287 3932 /* Generate dynamic relcoation only when there is a
c293fa49 3933 non-GOT reference in a shared object. */
0e1862bb 3934 if (bfd_link_pic (info) && h->non_got_ref)
710ab287
L		 3935 {
3936 Elf_Internal_Rela outrel;
710ab287
L		 3937 asection *sreloc;
3938 bfd_vma offset;
3939
c25bc9fc
L		 3940 /* Need a dynamic relocation to get the real function
3941 adddress. */
710ab287
L		 3942 offset = _bfd_elf_section_offset (output_bfd,
3943 info,
3944 input_section,
3945 rel->r_offset);
3946 if (offset == (bfd_vma) -1
3947 || offset == (bfd_vma) -2)
3948 abort ();
3949
3950 outrel.r_offset = (input_section->output_section->vma
3951 + input_section->output_offset
3952 + offset);
3953
3954 if (h->dynindx == -1
44c4ea11 3955 || h->forced_local
0e1862bb 3956 || bfd_link_executable (info))
710ab287
L		 3957 {
3958 /* This symbol is resolved locally. */
56b8aada
L		 3959 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3960 bfd_put_32 (output_bfd,
3961 (h->root.u.def.value
3962 + h->root.u.def.section->output_section->vma
3963 + h->root.u.def.section->output_offset),
3964 contents + offset);
710ab287
L		 3965 }
3966 else
56b8aada 3967 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3968
6de2ae4a 3969 sreloc = htab->elf.irelifunc;
59d6ffb2 3970 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3971
3972 /* If this reloc is against an external symbol, we
3973 do not want to fiddle with the addend. Otherwise,
3974 we need to include the symbol value so that it
3975 becomes an addend for the dynamic reloc. For an
3976 internal symbol, we have updated addend. */
56b8aada 3977 continue;
710ab287 3978 }
d59a60e9 3979 /* FALLTHROUGH */
cbe950e9
L		 3980 case R_386_PC32:
3981 case R_386_PLT32:
3982 goto do_relocation;
3983
3984 case R_386_GOT32:
02a86693 3985 case R_386_GOT32X:
6de2ae4a 3986 base_got = htab->elf.sgot;
cbe950e9
L		 3987 off = h->got.offset;
3988
7afd84dc 3989 if (base_got == NULL)
cbe950e9
L		 3990 abort ();
3991
7afd84dc 3992 if (off == (bfd_vma) -1)
cbe950e9 3993 {
7afd84dc
L		 3994 /* We can't use h->got.offset here to save state, or
3995 even just remember the offset, as finish_dynamic_symbol
3996 would use that as offset into .got. */
6bbec505 3997
6de2ae4a 3998 if (htab->elf.splt != NULL)
7afd84dc 3999 {
25e762b9 4000 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 4001 off = (plt_index + 3) * 4;
6de2ae4a 4002 base_got = htab->elf.sgotplt;
7afd84dc 4003 }
cbe950e9
L		 4004 else
4005 {
25e762b9 4006 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 4007 off = plt_index * 4;
6de2ae4a 4008 base_got = htab->elf.igotplt;
7afd84dc
L		 4009 }
4010
4011 if (h->dynindx == -1
4012 || h->forced_local
4013 || info->symbolic)
4014 {
4015 /* This references the local defitionion. We must
4016 initialize this entry in the global offset table.
4017 Since the offset must always be a multiple of 8,
4018 we use the least significant bit to record
4019 whether we have initialized it already.
4020
4021 When doing a dynamic link, we create a .rela.got
4022 relocation entry to initialize the value. This
4023 is done in the finish_dynamic_symbol routine. */
4024 if ((off & 1) != 0)
4025 off &= ~1;
4026 else
4027 {
4028 bfd_put_32 (output_bfd, relocation,
4029 base_got->contents + off);
4030 h->got.offset |= 1;
4031 }
cbe950e9 4032 }
cbe950e9 4033
7afd84dc 4034 relocation = off;
cbe950e9 4035
7afd84dc 4036 /* Adjust for static executables. */
6de2ae4a 4037 if (htab->elf.splt == NULL)
7afd84dc
L		 4038 relocation += gotplt->output_offset;
4039 }
4040 else
0018b0a3
L		 4041 {
4042 relocation = (base_got->output_section->vma
4043 + base_got->output_offset + off
4044 - gotplt->output_section->vma
4045 - gotplt->output_offset);
4046 /* Adjust for static executables. */
6de2ae4a 4047 if (htab->elf.splt == NULL)
0018b0a3
L		 4048 relocation += gotplt->output_offset;
4049 }
4050
cbe950e9
L		 4051 goto do_relocation;
4052
4053 case R_386_GOTOFF:
4054 relocation -= (gotplt->output_section->vma
4055 + gotplt->output_offset);
4056 goto do_relocation;
4057 }
4058 }
4059
04ebc307 4060 eh = (struct elf_i386_link_hash_entry *) h;
aec6b87e 4061 resolved_to_zero = (eh != NULL
e62b9723
L		 4062 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
4063 eh->has_got_reloc,
4064 eh));
aec6b87e 4065
252b5132
RH		 4066 switch (r_type)
4067 {
02a86693
L		 4068 case R_386_GOT32X:
4069 /* Avoid optimizing _DYNAMIC since ld.so may use its
4070 link-time address. */
4071 if (h == htab->elf.hdynamic)
4072 goto r_386_got32;
4073
4074 if (bfd_link_pic (info))
4075 {
4076 /* It is OK to convert mov to lea and convert indirect
4077 branch to direct branch. It is OK to convert adc,
4078 add, and, cmp, or, sbb, sub, test, xor only when PIC
4079 is false. */
02e2aef8
L		 4080 unsigned int opcode, addend;
4081 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
4082 if (addend != 0)
4083 goto r_386_got32;
4084 opcode = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
02a86693
L		 4085 if (opcode != 0x8b && opcode != 0xff)
4086 goto r_386_got32;
4087 }
4088
4089 /* Resolve "mov GOT[(%reg)], %reg",
4090 "call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
4091 and "binop foo@GOT[(%reg)], %reg". */
4092 if (h == NULL
4093 || (h->plt.offset == (bfd_vma) -1
4094 && h->got.offset == (bfd_vma) -1)
4095 || htab->elf.sgotplt == NULL)
4096 abort ();
4097
4098 offplt = (htab->elf.sgotplt->output_section->vma
4099 + htab->elf.sgotplt->output_offset);
4100
4101 /* It is relative to .got.plt section. */
4102 if (h->got.offset != (bfd_vma) -1)
32875eb1
L		 4103 /* Use GOT entry. Mask off the least significant bit in
4104 GOT offset which may be set by R_386_GOT32 processing
4105 below. */
02a86693
L		 4106 relocation = (htab->elf.sgot->output_section->vma
4107 + htab->elf.sgot->output_offset
32875eb1 4108 + (h->got.offset & ~1) - offplt);
02a86693
L		 4109 else
4110 /* Use GOTPLT entry. */
4111 relocation = (h->plt.offset / plt_entry_size - 1 + 3) * 4;
4112
4113 if (!bfd_link_pic (info))
4114 {
4115 /* If not PIC, add the .got.plt section address for
a3718e9e 4116 baseless addressing. */
02a86693 4117 unsigned int modrm;
02e2aef8 4118 modrm = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
02a86693
L		 4119 if ((modrm & 0xc7) == 0x5)
4120 relocation += offplt;
4121 }
4122
4123 unresolved_reloc = FALSE;
4124 break;
4125
252b5132 4126 case R_386_GOT32:
02a86693 4127r_386_got32:
252b5132
RH		 4128 /* Relocation is to the entry for this symbol in the global
4129 offset table. */
6de2ae4a 4130 if (htab->elf.sgot == NULL)
ffb2e45b 4131 abort ();
252b5132
RH		 4132
4133 if (h != NULL)
4134 {
b34976b6 4135 bfd_boolean dyn;
252b5132
RH		 4136
4137 off = h->got.offset;
ebe50bae 4138 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L		 4139 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4140 bfd_link_pic (info),
4141 h)
4142 || (bfd_link_pic (info)
586119b3 4143 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 4144 || (ELF_ST_VISIBILITY (h->other)
4145 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 4146 {
4147 /* This is actually a static link, or it is a
4148 -Bsymbolic link and the symbol is defined
4149 locally, or the symbol was forced to be local
4150 because of a version file. We must initialize
4151 this entry in the global offset table. Since the
4152 offset must always be a multiple of 4, we use the
4153 least significant bit to record whether we have
4154 initialized it already.
4155
4156 When doing a dynamic link, we create a .rel.got
4157 relocation entry to initialize the value. This
4158 is done in the finish_dynamic_symbol routine. */
4159 if ((off & 1) != 0)
4160 off &= ~1;
4161 else
4162 {
4163 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4164 htab->elf.sgot->contents + off);
252b5132
RH		 4165 h->got.offset |= 1;
4166 }
4167 }
8c694914 4168 else
b34976b6 4169 unresolved_reloc = FALSE;
252b5132
RH		 4170 }
4171 else
4172 {
ffb2e45b
AM		 4173 if (local_got_offsets == NULL)
4174 abort ();
252b5132
RH		 4175
4176 off = local_got_offsets[r_symndx];
4177
4178 /* The offset must always be a multiple of 4. We use
83be169b
AM		 4179 the least significant bit to record whether we have
4180 already generated the necessary reloc. */
252b5132
RH		 4181 if ((off & 1) != 0)
4182 off &= ~1;
4183 else
4184 {
6725bdbf 4185 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4186 htab->elf.sgot->contents + off);
252b5132 4187
0e1862bb 4188 if (bfd_link_pic (info))
252b5132 4189 {
947216bf
AM		 4190 asection *s;
4191 Elf_Internal_Rela outrel;
252b5132 4192
6de2ae4a 4193 s = htab->elf.srelgot;
947216bf 4194 if (s == NULL)
ffb2e45b 4195 abort ();
252b5132 4196
6de2ae4a
L		 4197 outrel.r_offset = (htab->elf.sgot->output_section->vma
4198 + htab->elf.sgot->output_offset
252b5132
RH		 4199 + off);
4200 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 4201 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 4202 }
4203
4204 local_got_offsets[r_symndx] |= 1;
4205 }
252b5132
RH		 4206 }
4207
ffb2e45b
AM		 4208 if (off >= (bfd_vma) -2)
4209 abort ();
4210
6de2ae4a
L		 4211 relocation = htab->elf.sgot->output_section->vma
4212 + htab->elf.sgot->output_offset + off
4213 - htab->elf.sgotplt->output_section->vma
4214 - htab->elf.sgotplt->output_offset;
252b5132
RH		 4215 break;
4216
4217 case R_386_GOTOFF:
4218 /* Relocation is relative to the start of the global offset
4219 table. */
4220
3d949995
L		 4221 /* Check to make sure it isn't a protected function or data
4222 symbol for shared library since it may not be local when
4223 used as function address or with copy relocation. We also
e3c0e327 4224 need to make sure that a symbol is referenced locally. */
0e1862bb 4225 if (!bfd_link_executable (info) && h)
90f487df 4226 {
41bed6dd
L		 4227 if (!h->def_regular)
4228 {
4229 const char *v;
4230
4231 switch (ELF_ST_VISIBILITY (h->other))
4232 {
4233 case STV_HIDDEN:
4234 v = _("hidden symbol");
4235 break;
4236 case STV_INTERNAL:
4237 v = _("internal symbol");
4238 break;
4239 case STV_PROTECTED:
4240 v = _("protected symbol");
4241 break;
4242 default:
4243 v = _("symbol");
4244 break;
4245 }
4246
4247 (*_bfd_error_handler)
4248 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
4249 input_bfd, v, h->root.root.string);
4250 bfd_set_error (bfd_error_bad_value);
4251 return FALSE;
4252 }
d5597ebc 4253 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 4254 && (h->type == STT_FUNC
4255 || h->type == STT_OBJECT)
41bed6dd
L		 4256 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
4257 {
4258 (*_bfd_error_handler)
3d949995
L		 4259 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
4260 input_bfd,
4261 h->type == STT_FUNC ? "function" : "data",
4262 h->root.root.string);
41bed6dd
L		 4263 bfd_set_error (bfd_error_bad_value);
4264 return FALSE;
4265 }
90f487df
L		 4266 }
4267
8c37241b
JJ		 4268 /* Note that sgot is not involved in this
4269 calculation. We always want the start of .got.plt. If we
4270 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 4271 permitted by the ABI, we might have to change this
4272 calculation. */
6de2ae4a
L		 4273 relocation -= htab->elf.sgotplt->output_section->vma
4274 + htab->elf.sgotplt->output_offset;
252b5132
RH		 4275 break;
4276
4277 case R_386_GOTPC:
4278 /* Use global offset table as symbol value. */
6de2ae4a
L		 4279 relocation = htab->elf.sgotplt->output_section->vma
4280 + htab->elf.sgotplt->output_offset;
b34976b6 4281 unresolved_reloc = FALSE;
252b5132
RH		 4282 break;
4283
4284 case R_386_PLT32:
4285 /* Relocation is to the entry for this symbol in the
4286 procedure linkage table. */
4287
dd5724d5 4288 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 4289 without using the procedure linkage table. */
252b5132
RH		 4290 if (h == NULL)
4291 break;
4292
dd7e64d4
L		 4293 if ((h->plt.offset == (bfd_vma) -1
4294 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 4295 || htab->elf.splt == NULL)
252b5132
RH		 4296 {
4297 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 4298 happens when statically linking PIC code, or when
4299 using -Bsymbolic. */
252b5132
RH		 4300 break;
4301 }
4302
dd7e64d4
L		 4303 if (h->plt.offset != (bfd_vma) -1)
4304 {
4305 resolved_plt = htab->elf.splt;
4306 plt_offset = h->plt.offset;
4307 }
4308 else
4309 {
4310 resolved_plt = htab->plt_got;
4311 plt_offset = eh->plt_got.offset;
4312 }
4313
4314 relocation = (resolved_plt->output_section->vma
4315 + resolved_plt->output_offset
4316 + plt_offset);
b34976b6 4317 unresolved_reloc = FALSE;
252b5132
RH		 4318 break;
4319
1788fc08 4320 case R_386_SIZE32:
1788fc08
L		 4321 /* Set to symbol size. */
4322 relocation = st_size;
4323 /* Fall through. */
4324
252b5132
RH		 4325 case R_386_32:
4326 case R_386_PC32:
3348747a
NS		 4327 if ((input_section->flags & SEC_ALLOC) == 0
4328 || is_vxworks_tls)
ec338859
AM		 4329 break;
4330
aec6b87e
L		 4331 /* Copy dynamic function pointer relocations. Don't generate
4332 dynamic relocations against resolved undefined weak symbols
4333 in PIE, except for R_386_PC32. */
0e1862bb 4334 if ((bfd_link_pic (info)
ef5aade5 4335 && (h == NULL
aec6b87e
L		 4336 || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4337 && (!resolved_to_zero
4338 || r_type == R_386_PC32))
4339 || h->root.type != bfd_link_hash_undefweak))
1788fc08 4340 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 4341 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845 4342 || (ELIMINATE_COPY_RELOCS
0e1862bb 4343 && !bfd_link_pic (info)
12d0ee4a
AM		 4344 && h != NULL
4345 && h->dynindx != -1
aec6b87e
L		 4346 && (!h->non_got_ref
4347 || eh->func_pointer_refcount > 0
4348 || (h->root.type == bfd_link_hash_undefweak
4349 && !resolved_to_zero))
bae420ef
L		 4350 && ((h->def_dynamic && !h->def_regular)
4351 /* Undefined weak symbol is bound locally when
4352 PIC is false. */
4353 || h->root.type == bfd_link_hash_undefweak)))
252b5132 4354 {
947216bf 4355 Elf_Internal_Rela outrel;
b34976b6 4356 bfd_boolean skip, relocate;
0c715baa 4357 asection *sreloc;
252b5132
RH		 4358
4359 /* When generating a shared object, these relocations
4360 are copied into the output file to be resolved at run
4361 time. */
4362
b34976b6
AM		 4363 skip = FALSE;
4364 relocate = FALSE;
252b5132 4365
c629eae0
JJ		 4366 outrel.r_offset =
4367 _bfd_elf_section_offset (output_bfd, info, input_section,
4368 rel->r_offset);
4369 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4370 skip = TRUE;
0bb2d96a 4371 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4372 skip = TRUE, relocate = TRUE;
252b5132
RH		 4373 outrel.r_offset += (input_section->output_section->vma
4374 + input_section->output_offset);
4375
4376 if (skip)
0bb2d96a 4377 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 4378 else if (h != NULL
4379 && h->dynindx != -1
4380 && (r_type == R_386_PC32
4e0c91e4
L		 4381 || !(bfd_link_executable (info)
4382 || SYMBOLIC_BIND (info, h))
f5385ebf 4383 || !h->def_regular))
0bb2d96a 4384 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 4385 else
4386 {
5a15f56f 4387 /* This symbol is local, or marked to become local. */
b34976b6 4388 relocate = TRUE;
5a15f56f 4389 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 4390 }
4391
cbe950e9 4392 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 4393
62d78908
L		 4394 if (sreloc == NULL || sreloc->contents == NULL)
4395 {
4396 r = bfd_reloc_notsupported;
4397 goto check_relocation_error;
4398 }
0c715baa 4399
59d6ffb2 4400 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 4401
4402 /* If this reloc is against an external symbol, we do
4403 not want to fiddle with the addend. Otherwise, we
4404 need to include the symbol value so that it becomes
4405 an addend for the dynamic reloc. */
0f88be7a 4406 if (! relocate)
252b5132
RH		 4407 continue;
4408 }
252b5132
RH		 4409 break;
4410
37e55690 4411 case R_386_TLS_IE:
0e1862bb 4412 if (!bfd_link_executable (info))
37e55690 4413 {
947216bf 4414 Elf_Internal_Rela outrel;
37e55690 4415 asection *sreloc;
37e55690
JJ		 4416
4417 outrel.r_offset = rel->r_offset
4418 + input_section->output_section->vma
4419 + input_section->output_offset;
4420 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4421 sreloc = elf_section_data (input_section)->sreloc;
4422 if (sreloc == NULL)
4423 abort ();
59d6ffb2 4424 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4425 }
4426 /* Fall through */
4427
13ae64f3 4428 case R_386_TLS_GD:
67a4f2b7
AO		 4429 case R_386_TLS_GOTDESC:
4430 case R_386_TLS_DESC_CALL:
13ae64f3 4431 case R_386_TLS_IE_32:
37e55690 4432 case R_386_TLS_GOTIE:
13ae64f3
JJ		 4433 tls_type = GOT_UNKNOWN;
4434 if (h == NULL && local_got_offsets)
4435 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
4436 else if (h != NULL)
142411ca 4437 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 4438 if (tls_type == GOT_TLS_IE)
4439 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 4440
4441 if (! elf_i386_tls_transition (info, input_bfd,
4442 input_section, contents,
4443 symtab_hdr, sym_hashes,
4444 &r_type, tls_type, rel,
bedfd056 4445 relend, h, r_symndx, TRUE))
142411ca 4446 return FALSE;
13ae64f3
JJ		 4447
4448 if (r_type == R_386_TLS_LE_32)
4449 {
82e51918 4450 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 4451 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
4452 {
142411ca 4453 unsigned int type;
13ae64f3
JJ		 4454 bfd_vma roff;
4455
4456 /* GD->LE transition. */
6eaa7fb5 4457 type = *(contents + rel->r_offset - 2);
13ae64f3
JJ		 4458 if (type == 0x04)
4459 {
6eaa7fb5
L		 4460 /* Change
4461 leal foo@tlsgd(,%ebx,1), %eax
4462 call ___tls_get_addr@PLT
4463 into:
4464 movl %gs:0, %eax
4465 subl $foo@tpoff, %eax
13ae64f3 4466 (6 byte form of subl). */
142411ca 4467 roff = rel->r_offset + 5;
13ae64f3
JJ		 4468 }
4469 else
4470 {
6eaa7fb5
L		 4471 /* Change
4472 leal foo@tlsgd(%ebx), %eax
4473 call ___tls_get_addr@PLT
4474 nop
4475 or
4476 leal foo@tlsgd(%reg), %eax
4477 call *___tls_get_addr@GOT(%reg)
4478 which may be converted to
4479 addr32 call ___tls_get_addr
4480 into:
4481 movl %gs:0, %eax; subl $foo@tpoff, %eax
142411ca 4482 (6 byte form of subl). */
142411ca 4483 roff = rel->r_offset + 6;
13ae64f3 4484 }
6eaa7fb5
L		 4485 memcpy (contents + roff - 8,
4486 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
eb4ff4d6 4487 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 4488 contents + roff);
6eaa7fb5 4489 /* Skip R_386_PC32, R_386_PLT32 and R_386_GOT32X. */
13ae64f3 4490 rel++;
60f2e42e 4491 wrel++;
13ae64f3
JJ		 4492 continue;
4493 }
67a4f2b7
AO		 4494 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4495 {
4496 /* GDesc -> LE transition.
4497 It's originally something like:
4498 leal x@tlsdesc(%ebx), %eax
4499
4500 leal x@ntpoff, %eax
4501
4502 Registers other than %eax may be set up here. */
4503
142411ca 4504 unsigned int val;
67a4f2b7
AO		 4505 bfd_vma roff;
4506
67a4f2b7 4507 roff = rel->r_offset;
67a4f2b7 4508 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4509
4510 /* Now modify the instruction as appropriate. */
4511 /* aoliva FIXME: remove the above and xor the byte
4512 below with 0x86. */
4513 bfd_put_8 (output_bfd, val ^ 0x86,
4514 contents + roff - 1);
eb4ff4d6 4515 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4516 contents + roff);
4517 continue;
4518 }
4519 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4520 {
4521 /* GDesc -> LE transition.
4522 It's originally:
4523 call *(%eax)
4524 Turn it into:
142411ca 4525 xchg %ax,%ax */
67a4f2b7 4526
67a4f2b7 4527 bfd_vma roff;
6bbec505 4528
67a4f2b7 4529 roff = rel->r_offset;
10efb593 4530 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4531 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4532 continue;
4533 }
37e55690 4534 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4535 {
142411ca 4536 unsigned int val;
13ae64f3
JJ		 4537
4538 /* IE->LE transition:
37e55690
JJ		 4539 Originally it can be one of:
4540 movl foo, %eax
4541 movl foo, %reg
4542 addl foo, %reg
4543 We change it into:
4544 movl $foo, %eax
4545 movl $foo, %reg
4546 addl $foo, %reg. */
37e55690 4547 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4548 if (val == 0xa1)
4549 {
4550 /* movl foo, %eax. */
55fd94b0
AM		 4551 bfd_put_8 (output_bfd, 0xb8,
4552 contents + rel->r_offset - 1);
37e55690 4553 }
299bf759 4554 else
37e55690 4555 {
142411ca
L		 4556 unsigned int type;
4557
55fd94b0
AM		 4558 type = bfd_get_8 (input_bfd,
4559 contents + rel->r_offset - 2);
299bf759 4560 switch (type)
26e41594 4561 {
299bf759
L		 4562 case 0x8b:
4563 /* movl */
299bf759
L		 4564 bfd_put_8 (output_bfd, 0xc7,
4565 contents + rel->r_offset - 2);
4566 bfd_put_8 (output_bfd,
4567 0xc0 | ((val >> 3) & 7),
4568 contents + rel->r_offset - 1);
4569 break;
4570 case 0x03:
4571 /* addl */
299bf759
L		 4572 bfd_put_8 (output_bfd, 0x81,
4573 contents + rel->r_offset - 2);
4574 bfd_put_8 (output_bfd,
4575 0xc0 | ((val >> 3) & 7),
4576 contents + rel->r_offset - 1);
4577 break;
4578 default:
4579 BFD_FAIL ();
4580 break;
26e41594 4581 }
37e55690 4582 }
eb4ff4d6 4583 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4584 contents + rel->r_offset);
4585 continue;
4586 }
4587 else
4588 {
4589 unsigned int val, type;
4590
4591 /* {IE_32,GOTIE}->LE transition:
4592 Originally it can be one of:
13ae64f3 4593 subl foo(%reg1), %reg2
13ae64f3 4594 movl foo(%reg1), %reg2
37e55690 4595 addl foo(%reg1), %reg2
13ae64f3
JJ		 4596 We change it into:
4597 subl $foo, %reg2
37e55690
JJ		 4598 movl $foo, %reg2 (6 byte form)
4599 addl $foo, %reg2. */
13ae64f3
JJ		 4600 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4601 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4602 if (type == 0x8b)
4603 {
4604 /* movl */
13ae64f3
JJ		 4605 bfd_put_8 (output_bfd, 0xc7,
4606 contents + rel->r_offset - 2);
4607 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4608 contents + rel->r_offset - 1);
4609 }
4610 else if (type == 0x2b)
4611 {
4612 /* subl */
13ae64f3
JJ		 4613 bfd_put_8 (output_bfd, 0x81,
4614 contents + rel->r_offset - 2);
4615 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4616 contents + rel->r_offset - 1);
4617 }
37e55690
JJ		 4618 else if (type == 0x03)
4619 {
4620 /* addl */
4621 bfd_put_8 (output_bfd, 0x81,
4622 contents + rel->r_offset - 2);
4623 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4624 contents + rel->r_offset - 1);
4625 }
13ae64f3
JJ		 4626 else
4627 BFD_FAIL ();
37e55690 4628 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4629 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4630 contents + rel->r_offset);
4631 else
eb4ff4d6 4632 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4633 contents + rel->r_offset);
13ae64f3
JJ		 4634 continue;
4635 }
4636 }
4637
6de2ae4a 4638 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4639 abort ();
4640
4641 if (h != NULL)
67a4f2b7
AO		 4642 {
4643 off = h->got.offset;
4644 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4645 }
13ae64f3
JJ		 4646 else
4647 {
4648 if (local_got_offsets == NULL)
4649 abort ();
4650
4651 off = local_got_offsets[r_symndx];
67a4f2b7 4652 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4653 }
4654
4655 if ((off & 1) != 0)
4656 off &= ~1;
26e41594 4657 else
13ae64f3 4658 {
947216bf 4659 Elf_Internal_Rela outrel;
91d6fa6a 4660 int dr_type;
67a4f2b7 4661 asection *sreloc;
13ae64f3 4662
6de2ae4a 4663 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4664 abort ();
4665
67a4f2b7
AO		 4666 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4667
4668 if (GOT_TLS_GDESC_P (tls_type))
4669 {
59d6ffb2 4670 bfd_byte *loc;
67a4f2b7
AO		 4671 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4672 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4673 <= htab->elf.sgotplt->size);
4674 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4675 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4676 + offplt
4677 + htab->sgotplt_jump_table_size);
6de2ae4a 4678 sreloc = htab->elf.srelplt;
67a4f2b7 4679 loc = sreloc->contents;
5ae0bfb6
RS		 4680 loc += (htab->next_tls_desc_index++
4681 * sizeof (Elf32_External_Rel));
67a4f2b7 4682 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4683 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4684 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4685 if (indx == 0)
4686 {
4687 BFD_ASSERT (! unresolved_reloc);
4688 bfd_put_32 (output_bfd,
eb4ff4d6 4689 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4690 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4691 + htab->sgotplt_jump_table_size + 4);
4692 }
4693 else
4694 {
4695 bfd_put_32 (output_bfd, 0,
6de2ae4a 4696 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4697 + htab->sgotplt_jump_table_size + 4);
4698 }
4699 }
4700
6de2ae4a 4701 sreloc = htab->elf.srelgot;
67a4f2b7 4702
6de2ae4a
L		 4703 outrel.r_offset = (htab->elf.sgot->output_section->vma
4704 + htab->elf.sgot->output_offset + off);
13ae64f3 4705
67a4f2b7 4706 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4707 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4708 else if (GOT_TLS_GDESC_P (tls_type))
4709 goto dr_done;
37e55690
JJ		 4710 else if (tls_type == GOT_TLS_IE_POS)
4711 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4712 else
4713 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4714
37e55690 4715 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4716 bfd_put_32 (output_bfd,
4717 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4718 htab->elf.sgot->contents + off);
37e55690 4719 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4720 bfd_put_32 (output_bfd,
eb4ff4d6 4721 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4722 htab->elf.sgot->contents + off);
67a4f2b7 4723 else if (dr_type != R_386_TLS_DESC)
c366c25e 4724 bfd_put_32 (output_bfd, 0,
6de2ae4a 4725 htab->elf.sgot->contents + off);
13ae64f3 4726 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4727
59d6ffb2 4728 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4729
67a4f2b7 4730 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4731 {
4732 if (indx == 0)
4733 {
82e51918 4734 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4735 bfd_put_32 (output_bfd,
eb4ff4d6 4736 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4737 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4738 }
4739 else
4740 {
4741 bfd_put_32 (output_bfd, 0,
6de2ae4a 4742 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4743 outrel.r_info = ELF32_R_INFO (indx,
4744 R_386_TLS_DTPOFF32);
4745 outrel.r_offset += 4;
59d6ffb2 4746 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4747 }
4748 }
37e55690
JJ		 4749 else if (tls_type == GOT_TLS_IE_BOTH)
4750 {
4751 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4752 (indx == 0
4753 ? relocation - elf_i386_dtpoff_base (info)
4754 : 0),
6de2ae4a 4755 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4756 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4757 outrel.r_offset += 4;
59d6ffb2 4758 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4759 }
13ae64f3 4760
67a4f2b7 4761 dr_done:
13ae64f3
JJ		 4762 if (h != NULL)
4763 h->got.offset |= 1;
4764 else
4765 local_got_offsets[r_symndx] |= 1;
4766 }
4767
67a4f2b7
AO		 4768 if (off >= (bfd_vma) -2
4769 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4770 abort ();
67a4f2b7
AO		 4771 if (r_type == R_386_TLS_GOTDESC
4772 || r_type == R_386_TLS_DESC_CALL)
4773 {
4774 relocation = htab->sgotplt_jump_table_size + offplt;
4775 unresolved_reloc = FALSE;
4776 }
4777 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4778 {
6de2ae4a
L		 4779 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4780 + htab->elf.sgotplt->output_offset;
4781 relocation = htab->elf.sgot->output_section->vma
4782 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4783 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4784 && tls_type == GOT_TLS_IE_BOTH)
4785 relocation += 4;
4786 if (r_type == R_386_TLS_IE)
8c37241b 4787 relocation += g_o_t;
b34976b6 4788 unresolved_reloc = FALSE;
13ae64f3 4789 }
67a4f2b7 4790 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4791 {
4792 unsigned int val, type;
4793 bfd_vma roff;
4794
4795 /* GD->IE transition. */
6eaa7fb5
L		 4796 type = *(contents + rel->r_offset - 2);
4797 val = *(contents + rel->r_offset - 1);
13ae64f3
JJ		 4798 if (type == 0x04)
4799 {
6eaa7fb5
L		 4800 /* Change
4801 leal foo@tlsgd(,%ebx,1), %eax
4802 call ___tls_get_addr@PLT
4803 into:
4804 movl %gs:0, %eax
4805 subl $foo@gottpoff(%ebx), %eax. */
13ae64f3 4806 val >>= 3;
142411ca 4807 roff = rel->r_offset - 3;
13ae64f3
JJ		 4808 }
4809 else
4810 {
6eaa7fb5
L		 4811 /* Change
4812 leal foo@tlsgd(%ebx), %eax
4813 call ___tls_get_addr@PLT
4814 nop
4815 or
4816 leal foo@tlsgd(%reg), %eax
4817 call *___tls_get_addr@GOT(%reg)
4818 which may be converted to
4819 addr32 call ___tls_get_addr
4820 into:
4821 movl %gs:0, %eax;
4822 subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4823 roff = rel->r_offset - 2;
4824 }
4825 memcpy (contents + roff,
4826 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4827 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4828 /* If foo is used only with foo@gotntpoff(%reg) and
4829 foo@indntpoff, but not with foo@gottpoff(%reg), change
4830 subl $foo@gottpoff(%reg), %eax
4831 into:
4832 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4833 if (tls_type == GOT_TLS_IE_POS)
4834 contents[roff + 6] = 0x03;
8c37241b 4835 bfd_put_32 (output_bfd,
6de2ae4a
L		 4836 htab->elf.sgot->output_section->vma
4837 + htab->elf.sgot->output_offset + off
4838 - htab->elf.sgotplt->output_section->vma
4839 - htab->elf.sgotplt->output_offset,
13ae64f3 4840 contents + roff + 8);
6eaa7fb5 4841 /* Skip R_386_PLT32 and R_386_GOT32X. */
13ae64f3 4842 rel++;
60f2e42e 4843 wrel++;
13ae64f3
JJ		 4844 continue;
4845 }
67a4f2b7
AO		 4846 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4847 {
4848 /* GDesc -> IE transition.
4849 It's originally something like:
4850 leal x@tlsdesc(%ebx), %eax
4851
4852 Change it to:
142411ca 4853 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4854 or:
4855 movl x@gottpoff(%ebx), %eax # before negl %eax
4856
4857 Registers other than %eax may be set up here. */
4858
67a4f2b7
AO		 4859 bfd_vma roff;
4860
4861 /* First, make sure it's a leal adding ebx to a 32-bit
4862 offset into any register, although it's probably
4863 almost always going to be eax. */
4864 roff = rel->r_offset;
67a4f2b7
AO		 4865
4866 /* Now modify the instruction as appropriate. */
4867 /* To turn a leal into a movl in the form we use it, it
4868 suffices to change the first byte from 0x8d to 0x8b.
4869 aoliva FIXME: should we decide to keep the leal, all
4870 we have to do is remove the statement below, and
4871 adjust the relaxation of R_386_TLS_DESC_CALL. */
4872 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4873
4874 if (tls_type == GOT_TLS_IE_BOTH)
4875 off += 4;
4876
4877 bfd_put_32 (output_bfd,
6de2ae4a
L		 4878 htab->elf.sgot->output_section->vma
4879 + htab->elf.sgot->output_offset + off
4880 - htab->elf.sgotplt->output_section->vma
4881 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4882 contents + roff);
4883 continue;
4884 }
4885 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4886 {
4887 /* GDesc -> IE transition.
4888 It's originally:
4889 call *(%eax)
4890
4891 Change it to:
142411ca 4892 xchg %ax,%ax
67a4f2b7
AO		 4893 or
4894 negl %eax
4895 depending on how we transformed the TLS_GOTDESC above.
4896 */
4897
67a4f2b7
AO		 4898 bfd_vma roff;
4899
67a4f2b7 4900 roff = rel->r_offset;
67a4f2b7
AO		 4901
4902 /* Now modify the instruction as appropriate. */
4903 if (tls_type != GOT_TLS_IE_NEG)
4904 {
10efb593
L		 4905 /* xchg %ax,%ax */
4906 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4907 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4908 }
4909 else
4910 {
4911 /* negl %eax */
4912 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4913 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4914 }
4915
4916 continue;
4917 }
4918 else
4919 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4920 break;
4921
4922 case R_386_TLS_LDM:
142411ca
L		 4923 if (! elf_i386_tls_transition (info, input_bfd,
4924 input_section, contents,
4925 symtab_hdr, sym_hashes,
4926 &r_type, GOT_UNKNOWN, rel,
bedfd056 4927 relend, h, r_symndx, TRUE))
142411ca 4928 return FALSE;
13ae64f3 4929
142411ca
L		 4930 if (r_type != R_386_TLS_LDM)
4931 {
6eaa7fb5
L		 4932 /* LD->LE transition. Change
4933 leal foo@tlsldm(%ebx) %eax
4934 call ___tls_get_addr@PLT
4935 into:
4936 movl %gs:0, %eax
4937 nop
4938 leal 0(%esi,1), %esi
4939 or change
4940 leal foo@tlsldm(%reg) %eax
4941 call *___tls_get_addr@GOT(%reg)
4942 which may be converted to
4943 addr32 call ___tls_get_addr
4944 into:
4945 movl %gs:0, %eax
4946 leal 0(%esi), %esi */
142411ca 4947 BFD_ASSERT (r_type == R_386_TLS_LE_32);
6eaa7fb5
L		 4948 if (*(contents + rel->r_offset + 4) == 0xff
4949 || *(contents + rel->r_offset + 4) == 0x67)
4950 memcpy (contents + rel->r_offset - 2,
4951 "\x65\xa1\0\0\0\0\x8d\xb6\0\0\0", 12);
4952 else
4953 memcpy (contents + rel->r_offset - 2,
4954 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4955 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 4956 rel++;
60f2e42e 4957 wrel++;
13ae64f3
JJ		 4958 continue;
4959 }
4960
6de2ae4a 4961 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4962 abort ();
4963
4964 off = htab->tls_ldm_got.offset;
4965 if (off & 1)
4966 off &= ~1;
4967 else
4968 {
947216bf 4969 Elf_Internal_Rela outrel;
13ae64f3 4970
6de2ae4a 4971 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4972 abort ();
4973
6de2ae4a
L		 4974 outrel.r_offset = (htab->elf.sgot->output_section->vma
4975 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4976
4977 bfd_put_32 (output_bfd, 0,
6de2ae4a 4978 htab->elf.sgot->contents + off);
13ae64f3 4979 bfd_put_32 (output_bfd, 0,
6de2ae4a 4980 htab->elf.sgot->contents + off + 4);
13ae64f3 4981 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4982 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4983 htab->tls_ldm_got.offset |= 1;
4984 }
6de2ae4a
L		 4985 relocation = htab->elf.sgot->output_section->vma
4986 + htab->elf.sgot->output_offset + off
4987 - htab->elf.sgotplt->output_section->vma
4988 - htab->elf.sgotplt->output_offset;
b34976b6 4989 unresolved_reloc = FALSE;
13ae64f3
JJ		 4990 break;
4991
4992 case R_386_TLS_LDO_32:
0e1862bb
L		 4993 if (!bfd_link_executable (info)
4994 || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4995 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4996 else
4997 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4998 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4999 break;
5000
5001 case R_386_TLS_LE_32:
13ae64f3 5002 case R_386_TLS_LE:
0e1862bb 5003 if (!bfd_link_executable (info))
37e55690 5004 {
947216bf 5005 Elf_Internal_Rela outrel;
37e55690 5006 asection *sreloc;
37e55690
JJ		 5007
5008 outrel.r_offset = rel->r_offset
5009 + input_section->output_section->vma
5010 + input_section->output_offset;
5011 if (h != NULL && h->dynindx != -1)
5012 indx = h->dynindx;
5013 else
5014 indx = 0;
5015 if (r_type == R_386_TLS_LE_32)
5016 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
5017 else
5018 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
5019 sreloc = elf_section_data (input_section)->sreloc;
5020 if (sreloc == NULL)
5021 abort ();
59d6ffb2 5022 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 5023 if (indx)
5024 continue;
5025 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 5026 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 5027 else
eb4ff4d6 5028 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 5029 }
5030 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 5031 relocation = elf_i386_tpoff (info, relocation);
37e55690 5032 else
eb4ff4d6 5033 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 5034 break;
5035
252b5132
RH		 5036 default:
5037 break;
5038 }
5039
239e1f3a
AM		 5040 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5041 because such sections are not SEC_ALLOC and thus ld.so will
5042 not process them. */
8c694914 5043 if (unresolved_reloc
239e1f3a 5044 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 5045 && h->def_dynamic)
5046 && _bfd_elf_section_offset (output_bfd, info, input_section,
5047 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 5048 {
5049 (*_bfd_error_handler)
843fe662 5050 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 5051 input_bfd,
5052 input_section,
6a30718d 5053 (long) rel->r_offset,
843fe662 5054 howto->name,
6a30718d 5055 h->root.root.string);
b34976b6 5056 return FALSE;
6a30718d 5057 }
83be169b 5058
cbe950e9 5059do_relocation:
252b5132
RH		 5060 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5061 contents, rel->r_offset,
55fd94b0 5062 relocation, 0);
252b5132 5063
62d78908 5064check_relocation_error:
cf5c0c5b 5065 if (r != bfd_reloc_ok)
252b5132 5066 {
cf5c0c5b 5067 const char *name;
ffb2e45b 5068
cf5c0c5b
AM		 5069 if (h != NULL)
5070 name = h->root.root.string;
5071 else
5072 {
5073 name = bfd_elf_string_from_elf_section (input_bfd,
5074 symtab_hdr->sh_link,
5075 sym->st_name);
5076 if (name == NULL)
b34976b6 5077 return FALSE;
cf5c0c5b
AM		 5078 if (*name == '\0')
5079 name = bfd_section_name (input_bfd, sec);
5080 }
ffb2e45b 5081
cf5c0c5b 5082 if (r == bfd_reloc_overflow)
1a72702b
AM		 5083 (*info->callbacks->reloc_overflow)
5084 (info, (h ? &h->root : NULL), name, howto->name,
5085 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
cf5c0c5b
AM		 5086 else
5087 {
5088 (*_bfd_error_handler)
d003868e
AM		 5089 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
5090 input_bfd, input_section,
cf5c0c5b 5091 (long) rel->r_offset, name, (int) r);
b34976b6 5092 return FALSE;
cf5c0c5b 5093 }
252b5132 5094 }
60f2e42e
L		 5095
5096 if (wrel != rel)
5097 *wrel = *rel;
5098 }
5099
5100 if (wrel != rel)
5101 {
5102 Elf_Internal_Shdr *rel_hdr;
5103 size_t deleted = rel - wrel;
5104
5105 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
5106 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5107 if (rel_hdr->sh_size == 0)
5108 {
5109 /* It is too late to remove an empty reloc section. Leave
5110 one NONE reloc.
5111 ??? What is wrong with an empty section??? */
5112 rel_hdr->sh_size = rel_hdr->sh_entsize;
5113 deleted -= 1;
5114 }
5115 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
5116 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5117 input_section->reloc_count -= deleted;
252b5132
RH		 5118 }
5119
b34976b6 5120 return TRUE;
252b5132
RH		 5121}
5122
5123/* Finish up dynamic symbol handling. We set the contents of various
5124 dynamic sections here. */
5125
b34976b6 5126static bfd_boolean
55fd94b0
AM		 5127elf_i386_finish_dynamic_symbol (bfd *output_bfd,
5128 struct bfd_link_info *info,
5129 struct elf_link_hash_entry *h,
5130 Elf_Internal_Sym *sym)
252b5132 5131{
6725bdbf 5132 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 5133 unsigned plt_entry_size;
5134 const struct elf_i386_backend_data *abed;
dd7e64d4 5135 struct elf_i386_link_hash_entry *eh;
aec6b87e 5136 bfd_boolean local_undefweak;
252b5132 5137
6725bdbf 5138 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5139 if (htab == NULL)
5140 return FALSE;
252b5132 5141
25e762b9
RM		 5142 abed = get_elf_i386_backend_data (output_bfd);
5143 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
5144
dd7e64d4
L		 5145 eh = (struct elf_i386_link_hash_entry *) h;
5146
aec6b87e
L		 5147 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
5148 resolved undefined weak symbols in executable so that their
5149 references have value 0 at run-time. */
e62b9723
L		 5150 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
5151 eh->has_got_reloc,
5152 eh);
aec6b87e 5153
252b5132
RH		 5154 if (h->plt.offset != (bfd_vma) -1)
5155 {
252b5132
RH		 5156 bfd_vma plt_index;
5157 bfd_vma got_offset;
947216bf
AM		 5158 Elf_Internal_Rela rel;
5159 bfd_byte *loc;
cbe950e9
L		 5160 asection *plt, *gotplt, *relplt;
5161
5162 /* When building a static executable, use .iplt, .igot.plt and
5163 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 5164 if (htab->elf.splt != NULL)
cbe950e9 5165 {
6de2ae4a
L		 5166 plt = htab->elf.splt;
5167 gotplt = htab->elf.sgotplt;
5168 relplt = htab->elf.srelplt;
cbe950e9
L		 5169 }
5170 else
5171 {
6de2ae4a
L		 5172 plt = htab->elf.iplt;
5173 gotplt = htab->elf.igotplt;
5174 relplt = htab->elf.irelplt;
cbe950e9 5175 }
252b5132
RH		 5176
5177 /* This symbol has an entry in the procedure linkage table. Set
5178 it up. */
5179
cbe950e9 5180 if ((h->dynindx == -1
aec6b87e 5181 && !local_undefweak
0e1862bb 5182 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L		 5183 && h->def_regular
5184 && h->type == STT_GNU_IFUNC))
5185 || plt == NULL
5186 || gotplt == NULL
5187 || relplt == NULL)
cec7f46a 5188 abort ();
252b5132
RH		 5189
5190 /* Get the index in the procedure linkage table which
5191 corresponds to this symbol. This is the index of this symbol
5192 in all the symbols for which we are making plt entries. The
cbe950e9 5193 first entry in the procedure linkage table is reserved.
252b5132 5194
cbe950e9 5195 Get the offset into the .got table of the entry that
252b5132 5196 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 5197 The first three are reserved.
6bbec505 5198
cbe950e9
L		 5199 For static executables, we don't reserve anything. */
5200
6de2ae4a 5201 if (plt == htab->elf.splt)
cbe950e9 5202 {
e1f98742
L		 5203 got_offset = h->plt.offset / plt_entry_size - 1;
5204 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 5205 }
5206 else
5207 {
e1f98742
L		 5208 got_offset = h->plt.offset / plt_entry_size;
5209 got_offset = got_offset * 4;
cbe950e9 5210 }
252b5132
RH		 5211
5212 /* Fill in the entry in the procedure linkage table. */
0e1862bb 5213 if (! bfd_link_pic (info))
252b5132 5214 {
25e762b9
RM		 5215 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
5216 abed->plt->plt_entry_size);
252b5132 5217 bfd_put_32 (output_bfd,
cbe950e9
L		 5218 (gotplt->output_section->vma
5219 + gotplt->output_offset
252b5132 5220 + got_offset),
25e762b9
RM		 5221 plt->contents + h->plt.offset
5222 + abed->plt->plt_got_offset);
eac338cf 5223
25e762b9 5224 if (abed->is_vxworks)
eac338cf
PB		 5225 {
5226 int s, k, reloc_index;
5227
5228 /* Create the R_386_32 relocation referencing the GOT
5229 for this PLT entry. */
5230
5231 /* S: Current slot number (zero-based). */
25e762b9
RM		 5232 s = ((h->plt.offset - abed->plt->plt_entry_size)
5233 / abed->plt->plt_entry_size);
eac338cf 5234 /* K: Number of relocations for PLTResolve. */
0e1862bb 5235 if (bfd_link_pic (info))
eac338cf
PB		 5236 k = PLTRESOLVE_RELOCS_SHLIB;
5237 else
5238 k = PLTRESOLVE_RELOCS;
5239 /* Skip the PLTresolve relocations, and the relocations for
5240 the other PLT slots. */
5241 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
5242 loc = (htab->srelplt2->contents + reloc_index
5243 * sizeof (Elf32_External_Rel));
5244
6de2ae4a
L		 5245 rel.r_offset = (htab->elf.splt->output_section->vma
5246 + htab->elf.splt->output_offset
eac338cf 5247 + h->plt.offset + 2),
7325306f 5248 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5249 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5250
5251 /* Create the R_386_32 relocation referencing the beginning of
5252 the PLT for this GOT entry. */
6de2ae4a
L		 5253 rel.r_offset = (htab->elf.sgotplt->output_section->vma
5254 + htab->elf.sgotplt->output_offset
eac338cf 5255 + got_offset);
7325306f 5256 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 5257 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 5258 loc + sizeof (Elf32_External_Rel));
eac338cf 5259 }
252b5132
RH		 5260 }
5261 else
5262 {
25e762b9
RM		 5263 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
5264 abed->plt->plt_entry_size);
252b5132 5265 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 5266 plt->contents + h->plt.offset
5267 + abed->plt->plt_got_offset);
252b5132
RH		 5268 }
5269
aec6b87e
L		 5270 /* Fill in the entry in the global offset table. Leave the entry
5271 as zero for undefined weak symbol in PIE. No PLT relocation
5272 against undefined weak symbol in PIE. */
5273 if (!local_undefweak)
cbe950e9 5274 {
cbe950e9 5275 bfd_put_32 (output_bfd,
aec6b87e
L		 5276 (plt->output_section->vma
5277 + plt->output_offset
5278 + h->plt.offset
5279 + abed->plt->plt_lazy_offset),
cbe950e9 5280 gotplt->contents + got_offset);
252b5132 5281
aec6b87e
L		 5282 /* Fill in the entry in the .rel.plt section. */
5283 rel.r_offset = (gotplt->output_section->vma
5284 + gotplt->output_offset
5285 + got_offset);
5286 if (h->dynindx == -1
5287 || ((bfd_link_executable (info)
5288 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5289 && h->def_regular
5290 && h->type == STT_GNU_IFUNC))
5291 {
5292 /* If an STT_GNU_IFUNC symbol is locally defined, generate
5293 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
5294 in the .got.plt section. */
5295 bfd_put_32 (output_bfd,
5296 (h->root.u.def.value
5297 + h->root.u.def.section->output_section->vma
5298 + h->root.u.def.section->output_offset),
5299 gotplt->contents + got_offset);
5300 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
5301 /* R_386_IRELATIVE comes last. */
5302 plt_index = htab->next_irelative_index--;
5303 }
5304 else
5305 {
5306 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
5307 plt_index = htab->next_jump_slot_index++;
5308 }
5309
5310 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
5311 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5312
5313 /* Don't fill PLT entry for static executables. */
5314 if (plt == htab->elf.splt)
5315 {
5316 bfd_put_32 (output_bfd,
5317 plt_index * sizeof (Elf32_External_Rel),
5318 plt->contents + h->plt.offset
5319 + abed->plt->plt_reloc_offset);
5320 bfd_put_32 (output_bfd, - (h->plt.offset
5321 + abed->plt->plt_plt_offset + 4),
5322 plt->contents + h->plt.offset
5323 + abed->plt->plt_plt_offset);
5324 }
e1f98742 5325 }
dd7e64d4
L		 5326 }
5327 else if (eh->plt_got.offset != (bfd_vma) -1)
5328 {
5329 bfd_vma got_offset, plt_offset;
5330 asection *plt, *got, *gotplt;
5331 const bfd_byte *got_plt_entry;
5332
5333 /* Offset of displacement of the indirect jump. */
5334 bfd_vma plt_got_offset = 2;
e1f98742 5335
dd7e64d4
L		 5336 /* Set the entry in the GOT procedure linkage table. */
5337 plt = htab->plt_got;
5338 got = htab->elf.sgot;
5339 gotplt = htab->elf.sgotplt;
5340 got_offset = h->got.offset;
5341
5342 if (got_offset == (bfd_vma) -1
5343 || plt == NULL
5344 || got == NULL
5345 || gotplt == NULL)
5346 abort ();
5347
5348 /* Fill in the entry in the GOT procedure linkage table. */
0e1862bb 5349 if (! bfd_link_pic (info))
252b5132 5350 {
dd7e64d4
L		 5351 got_plt_entry = elf_i386_got_plt_entry;
5352 got_offset += got->output_section->vma + got->output_offset;
252b5132 5353 }
dd7e64d4
L		 5354 else
5355 {
5356 got_plt_entry = elf_i386_pic_got_plt_entry;
5357 got_offset += (got->output_section->vma
5358 + got->output_offset
5359 - gotplt->output_section->vma
5360 - gotplt->output_offset);
5361 }
5362
5363 plt_offset = eh->plt_got.offset;
5364 memcpy (plt->contents + plt_offset, got_plt_entry,
5365 sizeof (elf_i386_got_plt_entry));
5366 bfd_put_32 (output_bfd, got_offset,
5367 plt->contents + plt_offset + plt_got_offset);
5368 }
5369
aec6b87e
L		 5370 if (!local_undefweak
5371 && !h->def_regular
dd7e64d4
L		 5372 && (h->plt.offset != (bfd_vma) -1
5373 || eh->plt_got.offset != (bfd_vma) -1))
5374 {
5375 /* Mark the symbol as undefined, rather than as defined in
5376 the .plt section. Leave the value if there were any
5377 relocations where pointer equality matters (this is a clue
5378 for the dynamic linker, to make function pointer
5379 comparisons work between an application and shared
5380 library), otherwise set it to zero. If a function is only
5381 called from a binary, there is no need to slow down
5382 shared libraries because of that. */
5383 sym->st_shndx = SHN_UNDEF;
5384 if (!h->pointer_equality_needed)
5385 sym->st_value = 0;
252b5132
RH		 5386 }
5387
aec6b87e
L		 5388 /* Don't generate dynamic GOT relocation against undefined weak
5389 symbol in executable. */
13ae64f3 5390 if (h->got.offset != (bfd_vma) -1
67a4f2b7 5391 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
aec6b87e
L		 5392 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
5393 && !local_undefweak)
252b5132 5394 {
947216bf 5395 Elf_Internal_Rela rel;
252b5132
RH		 5396
5397 /* This symbol has an entry in the global offset table. Set it
5398 up. */
5399
6de2ae4a 5400 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 5401 abort ();
252b5132 5402
6de2ae4a
L		 5403 rel.r_offset = (htab->elf.sgot->output_section->vma
5404 + htab->elf.sgot->output_offset
dc810e39 5405 + (h->got.offset & ~(bfd_vma) 1));
252b5132 5406
dd5724d5
AM		 5407 /* If this is a static link, or it is a -Bsymbolic link and the
5408 symbol is defined locally or was forced to be local because
5409 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 5410 The entry in the global offset table will already have been
5411 initialized in the relocate_section function. */
710ab287 5412 if (h->def_regular
0018b0a3
L		 5413 && h->type == STT_GNU_IFUNC)
5414 {
0e1862bb 5415 if (bfd_link_pic (info))
710ab287
L		 5416 {
5417 /* Generate R_386_GLOB_DAT. */
5418 goto do_glob_dat;
5419 }
5420 else
5421 {
cd2b2c10
L		 5422 asection *plt;
5423
710ab287
L		 5424 if (!h->pointer_equality_needed)
5425 abort ();
5426
5427 /* For non-shared object, we can't use .got.plt, which
5428 contains the real function addres if we need pointer
5429 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 5430 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 5431 bfd_put_32 (output_bfd,
5432 (plt->output_section->vma
5433 + plt->output_offset + h->plt.offset),
6de2ae4a 5434 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 5435 return TRUE;
5436 }
0018b0a3 5437 }
0e1862bb 5438 else if (bfd_link_pic (info)
0018b0a3 5439 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 5440 {
6725bdbf 5441 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 5442 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
5443 }
252b5132
RH		 5444 else
5445 {
dd5724d5 5446 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 5447do_glob_dat:
6725bdbf 5448 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 5449 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 5450 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
5451 }
5452
59d6ffb2 5453 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 5454 }
5455
f5385ebf 5456 if (h->needs_copy)
252b5132 5457 {
947216bf 5458 Elf_Internal_Rela rel;
252b5132
RH		 5459
5460 /* This symbol needs a copy reloc. Set it up. */
5461
ffb2e45b
AM		 5462 if (h->dynindx == -1
5463 || (h->root.type != bfd_link_hash_defined
5464 && h->root.type != bfd_link_hash_defweak)
5465 || htab->srelbss == NULL)
5466 abort ();
252b5132
RH		 5467
5468 rel.r_offset = (h->root.u.def.value
5469 + h->root.u.def.section->output_section->vma
5470 + h->root.u.def.section->output_offset);
5471 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 5472 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 5473 }
5474
b34976b6 5475 return TRUE;
252b5132
RH		 5476}
5477
c25bc9fc
L		 5478/* Finish up local dynamic symbol handling. We set the contents of
5479 various dynamic sections here. */
5480
5481static bfd_boolean
5482elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
5483{
5484 struct elf_link_hash_entry *h
5485 = (struct elf_link_hash_entry *) *slot;
5486 struct bfd_link_info *info
23209a78 5487 = (struct bfd_link_info *) inf;
c25bc9fc
L		 5488
5489 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
5490 h, NULL);
5491}
5492
aec6b87e
L		 5493/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
5494 here since undefined weak symbol may not be dynamic and may not be
5495 called for elf_i386_finish_dynamic_symbol. */
5496
5497static bfd_boolean
5498elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
5499 void *inf)
5500{
5501 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
5502 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5503
5504 if (h->root.type != bfd_link_hash_undefweak
5505 || h->dynindx != -1)
5506 return TRUE;
5507
5508 return elf_i386_finish_dynamic_symbol (info->output_bfd,
5509 info, h, NULL);
5510}
5511
38701953
AM		 5512/* Used to decide how to sort relocs in an optimal manner for the
5513 dynamic linker, before writing them out. */
5514
5515static enum elf_reloc_type_class
cae1fbbb 5516elf_i386_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 5517 const asection *rel_sec ATTRIBUTE_UNUSED,
5518 const Elf_Internal_Rela *rela)
38701953 5519{
cae1fbbb
L		 5520 bfd *abfd = info->output_bfd;
5521 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5522 struct elf_link_hash_table *htab = elf_hash_table (info);
cae1fbbb 5523
d9e3b590
L		 5524 if (htab->dynsym != NULL
5525 && htab->dynsym->contents != NULL)
5526 {
5527 /* Check relocation against STT_GNU_IFUNC symbol if there are
5528 dynamic symbols. */
5529 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
5530 Elf_Internal_Sym sym;
5531 if (!bed->s->swap_symbol_in (abfd,
5532 (htab->dynsym->contents
5533 + r_symndx * sizeof (Elf32_External_Sym)),
5534 0, &sym))
5535 abort ();
5536
5537 if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
5538 return reloc_class_ifunc;
5539 }
cae1fbbb 5540
55fd94b0 5541 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 5542 {
5543 case R_386_RELATIVE:
5544 return reloc_class_relative;
5545 case R_386_JUMP_SLOT:
5546 return reloc_class_plt;
5547 case R_386_COPY:
5548 return reloc_class_copy;
5549 default:
5550 return reloc_class_normal;
5551 }
5552}
5553
252b5132
RH		 5554/* Finish up the dynamic sections. */
5555
b34976b6 5556static bfd_boolean
55fd94b0
AM		 5557elf_i386_finish_dynamic_sections (bfd *output_bfd,
5558 struct bfd_link_info *info)
252b5132 5559{
6725bdbf 5560 struct elf_i386_link_hash_table *htab;
252b5132 5561 bfd *dynobj;
252b5132 5562 asection *sdyn;
25e762b9 5563 const struct elf_i386_backend_data *abed;
252b5132 5564
6725bdbf 5565 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5566 if (htab == NULL)
5567 return FALSE;
5568
ebe50bae 5569 dynobj = htab->elf.dynobj;
3d4d4302 5570 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 5571 abed = get_elf_i386_backend_data (output_bfd);
252b5132 5572
ebe50bae 5573 if (htab->elf.dynamic_sections_created)
252b5132 5574 {
252b5132
RH		 5575 Elf32_External_Dyn *dyncon, *dynconend;
5576
6de2ae4a 5577 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 5578 abort ();
252b5132
RH		 5579
5580 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5581 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 5582 for (; dyncon < dynconend; dyncon++)
5583 {
5584 Elf_Internal_Dyn dyn;
51b64d56 5585 asection *s;
252b5132
RH		 5586
5587 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5588
5589 switch (dyn.d_tag)
5590 {
5591 default:
25e762b9
RM		 5592 if (abed->is_vxworks
5593 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5594 break;
0ac8d2ca 5595 continue;
252b5132
RH		 5596
5597 case DT_PLTGOT:
6de2ae4a 5598 s = htab->elf.sgotplt;
8c37241b 5599 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5600 break;
5601
252b5132 5602 case DT_JMPREL:
6de2ae4a 5603 s = htab->elf.srelplt;
6348e046 5604 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5605 break;
5606
5607 case DT_PLTRELSZ:
6de2ae4a 5608 s = htab->elf.srelplt;
eea6121a 5609 dyn.d_un.d_val = s->size;
252b5132
RH		 5610 break;
5611
5612 case DT_RELSZ:
5613 /* My reading of the SVR4 ABI indicates that the
5614 procedure linkage table relocs (DT_JMPREL) should be
5615 included in the overall relocs (DT_REL). This is
5616 what Solaris does. However, UnixWare can not handle
5617 that case. Therefore, we override the DT_RELSZ entry
6348e046 5618 here to make it not include the JMPREL relocs. */
6de2ae4a 5619 s = htab->elf.srelplt;
6348e046
AM		 5620 if (s == NULL)
5621 continue;
eea6121a 5622 dyn.d_un.d_val -= s->size;
6348e046
AM		 5623 break;
5624
5625 case DT_REL:
5626 /* We may not be using the standard ELF linker script.
5627 If .rel.plt is the first .rel section, we adjust
5628 DT_REL to not include it. */
6de2ae4a 5629 s = htab->elf.srelplt;
6348e046
AM		 5630 if (s == NULL)
5631 continue;
5632 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5633 continue;
eea6121a 5634 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5635 break;
5636 }
0ac8d2ca
AM		 5637
5638 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5639 }
5640
5641 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5642 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132 5643 {
0e1862bb 5644 if (bfd_link_pic (info))
eac338cf 5645 {
25e762b9
RM		 5646 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5647 abed->plt->plt0_entry_size);
5648 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5649 abed->plt0_pad_byte,
5650 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5651 }
252b5132
RH		 5652 else
5653 {
25e762b9
RM		 5654 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5655 abed->plt->plt0_entry_size);
5656 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5657 abed->plt0_pad_byte,
5658 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5659 bfd_put_32 (output_bfd,
6de2ae4a
L		 5660 (htab->elf.sgotplt->output_section->vma
5661 + htab->elf.sgotplt->output_offset
6725bdbf 5662 + 4),
25e762b9
RM		 5663 htab->elf.splt->contents
5664 + abed->plt->plt0_got1_offset);
252b5132 5665 bfd_put_32 (output_bfd,
6de2ae4a
L		 5666 (htab->elf.sgotplt->output_section->vma
5667 + htab->elf.sgotplt->output_offset
6725bdbf 5668 + 8),
25e762b9
RM		 5669 htab->elf.splt->contents
5670 + abed->plt->plt0_got2_offset);
eac338cf 5671
25e762b9 5672 if (abed->is_vxworks)
eac338cf
PB		 5673 {
5674 Elf_Internal_Rela rel;
7325306f 5675
eac338cf
PB		 5676 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5677 On IA32 we use REL relocations so the addend goes in
5678 the PLT directly. */
6de2ae4a
L		 5679 rel.r_offset = (htab->elf.splt->output_section->vma
5680 + htab->elf.splt->output_offset
25e762b9 5681 + abed->plt->plt0_got1_offset);
7325306f 5682 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5683 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5684 htab->srelplt2->contents);
5685 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5686 rel.r_offset = (htab->elf.splt->output_section->vma
5687 + htab->elf.splt->output_offset
25e762b9 5688 + abed->plt->plt0_got2_offset);
7325306f 5689 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5690 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5691 htab->srelplt2->contents +
5692 sizeof (Elf32_External_Rel));
5693 }
252b5132
RH		 5694 }
5695
5696 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5697 really seem like the right value. */
6de2ae4a 5698 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5699 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5700
5701 /* Correct the .rel.plt.unloaded relocations. */
0e1862bb 5702 if (abed->is_vxworks && !bfd_link_pic (info))
eac338cf 5703 {
25e762b9
RM		 5704 int num_plts = (htab->elf.splt->size
5705 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5706 unsigned char *p;
eac338cf
PB		 5707
5708 p = htab->srelplt2->contents;
0e1862bb 5709 if (bfd_link_pic (info))
eac338cf
PB		 5710 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5711 else
5712 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5713
5714 for (; num_plts; num_plts--)
5715 {
5716 Elf_Internal_Rela rel;
5717 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5718 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5719 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5720 p += sizeof (Elf32_External_Rel);
5721
5722 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5723 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5724 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5725 p += sizeof (Elf32_External_Rel);
5726 }
5727 }
252b5132
RH		 5728 }
5729 }
5730
6de2ae4a 5731 if (htab->elf.sgotplt)
252b5132 5732 {
56d4289c
L		 5733 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5734 {
5735 (*_bfd_error_handler)
5736 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5737 return FALSE;
5738 }
5739
12d0ee4a 5740 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5741 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5742 {
5743 bfd_put_32 (output_bfd,
55fd94b0 5744 (sdyn == NULL ? 0
12d0ee4a 5745 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5746 htab->elf.sgotplt->contents);
5747 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5748 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5749 }
252b5132 5750
6de2ae4a 5751 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5752 }
8c37241b 5753
e41b3a13 5754 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5755 if (htab->plt_eh_frame != NULL
5756 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5757 {
5758 if (htab->elf.splt != NULL
5759 && htab->elf.splt->size != 0
5760 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5761 && htab->elf.splt->output_section != NULL
5762 && htab->plt_eh_frame->output_section != NULL)
5763 {
5764 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5765 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5766 + htab->plt_eh_frame->output_offset
5767 + PLT_FDE_START_OFFSET;
5768 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5769 htab->plt_eh_frame->contents
5770 + PLT_FDE_START_OFFSET);
5771 }
5772 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5773 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5774 {
5775 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5776 htab->plt_eh_frame,
5777 htab->plt_eh_frame->contents))
5778 return FALSE;
5779 }
5780 }
5781
6de2ae4a
L		 5782 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5783 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5784
c25bc9fc
L		 5785 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5786 htab_traverse (htab->loc_hash_table,
5787 elf_i386_finish_local_dynamic_symbol,
5788 info);
5789
aec6b87e
L		 5790 /* Fill PLT entries for undefined weak symbols in PIE. */
5791 if (bfd_link_pie (info))
5792 bfd_hash_traverse (&info->hash->table,
5793 elf_i386_pie_finish_undefweak_symbol,
5794 info);
5795
b34976b6 5796 return TRUE;
252b5132
RH		 5797}
5798
3972882e 5799/* Return an array of PLT entry symbol values. */
4c45e5c9 5800
3972882e
L		 5801static bfd_vma *
5802elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5803 asection *relplt)
4c45e5c9 5804{
3972882e
L		 5805 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5806 arelent *p;
5807 long count, i;
5808 bfd_vma *plt_sym_val;
144bed8d 5809 bfd_vma plt_offset;
3972882e
L		 5810 bfd_byte *plt_contents;
5811 const struct elf_i386_backend_data *bed
5812 = get_elf_i386_backend_data (abfd);
5813 Elf_Internal_Shdr *hdr;
5814
5815 /* Get the .plt section contents. */
5816 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5817 if (plt_contents == NULL)
5818 return NULL;
5819 if (!bfd_get_section_contents (abfd, (asection *) plt,
5820 plt_contents, 0, plt->size))
5821 {
5822bad_return:
5823 free (plt_contents);
5824 return NULL;
5825 }
144bed8d 5826
3972882e
L		 5827 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5828 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5829 goto bad_return;
144bed8d 5830
3972882e
L		 5831 hdr = &elf_section_data (relplt)->this_hdr;
5832 count = relplt->size / hdr->sh_entsize;
5833
5834 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5835 if (plt_sym_val == NULL)
5836 goto bad_return;
cca5b8b6 5837
35181b3e 5838 for (i = 0; i < count; i++)
3972882e 5839 plt_sym_val[i] = -1;
cca5b8b6 5840
3972882e
L		 5841 plt_offset = bed->plt->plt_entry_size;
5842 p = relplt->relocation;
5843 for (i = 0; i < count; i++, p++)
144bed8d 5844 {
3972882e
L		 5845 long reloc_index;
5846
6f25f223 5847 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5848 if (p->howto == NULL)
6f25f223 5849 continue;
533d0af0
L		 5850
5851 if (p->howto->type != R_386_JUMP_SLOT
5852 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5853 continue;
5854
5855 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5856 + bed->plt->plt_reloc_offset));
5857 reloc_index /= sizeof (Elf32_External_Rel);
ec1f73bb
AM		 5858 if (reloc_index < count)
5859 plt_sym_val[reloc_index] = plt->vma + plt_offset;
5860
144bed8d 5861 plt_offset += bed->plt->plt_entry_size;
fca6ae69
L		 5862
5863 /* PR binutils/18437: Skip extra relocations in the .rel.plt
5864 section. */
5865 if (plt_offset >= plt->size)
5866 break;
144bed8d
L		 5867 }
5868
3972882e
L		 5869 free (plt_contents);
5870
5871 return plt_sym_val;
5872}
5873
5874/* Similar to _bfd_elf_get_synthetic_symtab. */
5875
5876static long
5877elf_i386_get_synthetic_symtab (bfd *abfd,
5878 long symcount,
5879 asymbol **syms,
5880 long dynsymcount,
5881 asymbol **dynsyms,
5882 asymbol **ret)
5883{
5884 asection *plt = bfd_get_section_by_name (abfd, ".plt");
5885 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5886 dynsymcount, dynsyms, ret,
5887 plt,
5888 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 5889}
5890
fdc90cb4
JJ		 5891/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5892
5893static bfd_boolean
5894elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5895{
5896 if (h->plt.offset != (bfd_vma) -1
5897 && !h->def_regular
5898 && !h->pointer_equality_needed)
5899 return FALSE;
5900
5901 return _bfd_elf_hash_symbol (h);
5902}
4c45e5c9 5903
6d00b590 5904#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5905#define TARGET_LITTLE_NAME "elf32-i386"
5906#define ELF_ARCH bfd_arch_i386
ae95ffa6 5907#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5908#define ELF_MACHINE_CODE EM_386
5909#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5910
5911#define elf_backend_can_gc_sections 1
51b64d56 5912#define elf_backend_can_refcount 1
252b5132
RH		 5913#define elf_backend_want_got_plt 1
5914#define elf_backend_plt_readonly 1
5915#define elf_backend_want_plt_sym 0
5916#define elf_backend_got_header_size 12
e41b3a13 5917#define elf_backend_plt_alignment 4
f7483970 5918#define elf_backend_extern_protected_data 1
bedfd056 5919#define elf_backend_caches_rawsize 1
252b5132 5920
8c29f035
AM		 5921/* Support RELA for objdump of prelink objects. */
5922#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5923#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5924
13ae64f3 5925#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5926
dd5724d5
AM		 5927#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5928#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5929#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5930#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5931#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 5932
5933#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5934#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5935#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5936#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5937#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5938#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5939#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5940#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5941#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
c5fccbec
DJ		 5942#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5943#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5944#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5945#define elf_backend_relocate_section elf_i386_relocate_section
5946#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5947#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5948#define elf_backend_omit_section_dynsym \
5949 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 5950#define elf_backend_hash_symbol elf_i386_hash_symbol
aec6b87e 5951#define elf_backend_fixup_symbol elf_i386_fixup_symbol
dd5724d5 5952
252b5132 5953#include "elf32-target.h"
2bc3c89a
AM		 5954
5955/* FreeBSD support. */
5956
5957#undef TARGET_LITTLE_SYM
6d00b590 5958#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 5959#undef TARGET_LITTLE_NAME
5960#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5961#undef ELF_OSABI
5962#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5963
5964/* The kernel recognizes executables as valid only if they carry a
5965 "FreeBSD" label in the ELF header. So we put this label on all
5966 executables and (for simplicity) also all other object files. */
5967
2bc3c89a 5968static void
d8045f23 5969elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5970{
78245035 5971 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5972
2bc3c89a 5973#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 5974 {
5975 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5976 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
5977 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
5978 }
caf47ea6 5979#endif
2bc3c89a
AM		 5980}
5981
5982#undef elf_backend_post_process_headers
d8045f23 5983#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5984#undef elf32_bed
5985#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5986
d8045f23
NC		 5987#undef elf_backend_add_symbol_hook
5988
2bc3c89a 5989#include "elf32-target.h"
eac338cf 5990
a6cc6b3b
RO		 5991/* Solaris 2. */
5992
5993#undef TARGET_LITTLE_SYM
6d00b590 5994#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 5995#undef TARGET_LITTLE_NAME
5996#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5997
914082d1
L		 5998#undef elf_backend_post_process_headers
5999
a6cc6b3b
RO		 6000/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
6001 objects won't be recognized. */
6002#undef ELF_OSABI
6003
6004#undef elf32_bed
6005#define elf32_bed elf32_i386_sol2_bed
6006
7dc98aea
RO		 6007/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
6008 boundary. */
84865015 6009#undef elf_backend_static_tls_alignment
7dc98aea
RO		 6010#define elf_backend_static_tls_alignment 8
6011
a6cc6b3b
RO		 6012/* The Solaris 2 ABI requires a plt symbol on all platforms.
6013
6014 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
6015 File, p.63. */
84865015 6016#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 6017#define elf_backend_want_plt_sym 1
6018
84865015
NC		 6019#undef elf_backend_strtab_flags
6020#define elf_backend_strtab_flags SHF_STRINGS
6021
5522f910
NC		 6022/* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
6023 has a type >= SHT_LOOS. Returns TRUE if these fields were initialised
6024 FALSE otherwise. ISECTION is the best guess matching section from the
6025 input bfd IBFD, but it might be NULL. */
6026
84865015 6027static bfd_boolean
5522f910
NC		 6028elf32_i386_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
6029 bfd *obfd ATTRIBUTE_UNUSED,
6030 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
6031 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 6032{
6033 /* PR 19938: FIXME: Need to add code for setting the sh_info
5522f910
NC		 6034 and sh_link fields of Solaris specific section types. */
6035 return FALSE;
84865015 6036
5522f910 6037 /* Based upon Oracle Solaris 11.3 Linkers and Libraries Guide, Ch. 13,
84865015
NC		 6038 Object File Format, Table 13-9 ELF sh_link and sh_info Interpretation:
6039
6040http://docs.oracle.com/cd/E53394_01/html/E54813/chapter6-94076.html#scrolltoc
6041
6042 The following values should be set:
6043
6044Type Link Info
6045-----------------------------------------------------------------------------
6046SHT_SUNW_ancillary The section header index of 0
6047 [0x6fffffee] the associated string table.
6048
6049SHT_SUNW_capinfo The section header index of For a dynamic object, the
6050 [0x6ffffff0] the associated symbol table. section header index of
6051 the associated
6052 SHT_SUNW_capchain table,
6053 otherwise 0.
6054
6055SHT_SUNW_symsort The section header index of 0
6056 [0x6ffffff1] the associated symbol table.
6057
6058SHT_SUNW_tlssort The section header index of 0
6059 [0x6ffffff2] the associated symbol table.
6060
6061SHT_SUNW_LDYNSYM The section header index of One greater than the
6062 [0x6ffffff3] the associated string table. symbol table index of the
6063 This index is the same string last local symbol,
6064 table used by the SHT_DYNSYM STB_LOCAL. Since
6065 section. SHT_SUNW_LDYNSYM only
6066 contains local symbols,
6067 sh_info is equivalent to
6068 the number of symbols in
6069 the table.
6070
6071SHT_SUNW_cap If symbol capabilities exist, If any capabilities refer
6072 [0x6ffffff5] the section header index of to named strings, the
6073 the associated section header index of
6074 SHT_SUNW_capinfo table, the associated string
6075 otherwise 0. table, otherwise 0.
6076
6077SHT_SUNW_move The section header index of 0
6078 [0x6ffffffa] the associated symbol table.
6079
6080SHT_SUNW_COMDAT 0 0
6081 [0x6ffffffb]
6082
6083SHT_SUNW_syminfo The section header index of The section header index
6084 [0x6ffffffc] the associated symbol table. of the associated
6085 .dynamic section.
6086
6087SHT_SUNW_verdef The section header index of The number of version
6088 [0x6ffffffd] the associated string table. definitions within the
6089 section.
6090
6091SHT_SUNW_verneed The section header index of The number of version
6092 [0x6ffffffe] the associated string table. dependencies within the
6093 section.
6094
6095SHT_SUNW_versym The section header index of 0
6096 [0x6fffffff] the associated symbol table. */
84865015
NC		 6097}
6098
5522f910
NC		 6099#undef elf_backend_copy_special_section_fields
6100#define elf_backend_copy_special_section_fields elf32_i386_copy_solaris_special_section_fields
84865015 6101
a6cc6b3b
RO		 6102#include "elf32-target.h"
6103
bf64a951
L		 6104/* Intel MCU support. */
6105
6106static bfd_boolean
6107elf32_iamcu_elf_object_p (bfd *abfd)
6108{
6109 /* Set the right machine number for an IAMCU elf32 file. */
6110 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
6111 return TRUE;
6112}
6113
6114#undef TARGET_LITTLE_SYM
6115#define TARGET_LITTLE_SYM iamcu_elf32_vec
6116#undef TARGET_LITTLE_NAME
6117#define TARGET_LITTLE_NAME "elf32-iamcu"
84865015 6118#undef ELF_ARCH
bf64a951
L		 6119#define ELF_ARCH bfd_arch_iamcu
6120
6121#undef ELF_MACHINE_CODE
6122#define ELF_MACHINE_CODE EM_IAMCU
6123
6124#undef ELF_OSABI
6125
6126#undef elf32_bed
6127#define elf32_bed elf32_iamcu_bed
6128
6129#undef elf_backend_object_p
6130#define elf_backend_object_p elf32_iamcu_elf_object_p
6131
6132#undef elf_backend_static_tls_alignment
6133
6134#undef elf_backend_want_plt_sym
6135#define elf_backend_want_plt_sym 0
6136
84865015 6137#undef elf_backend_strtab_flags
5522f910 6138#undef elf_backend_copy_special_section_fields
84865015 6139
bf64a951
L		 6140#include "elf32-target.h"
6141
6142/* Restore defaults. */
6143#undef ELF_ARCH
6144#define ELF_ARCH bfd_arch_i386
6145#undef ELF_MACHINE_CODE
6146#define ELF_MACHINE_CODE EM_386
6147
a27e4371
RM		 6148/* Native Client support. */
6149
6150#undef TARGET_LITTLE_SYM
6d00b590 6151#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 6152#undef TARGET_LITTLE_NAME
6153#define TARGET_LITTLE_NAME "elf32-i386-nacl"
6154#undef elf32_bed
6155#define elf32_bed elf32_i386_nacl_bed
6156
6157#undef ELF_MAXPAGESIZE
6158#define ELF_MAXPAGESIZE 0x10000
6159
6160/* Restore defaults. */
6161#undef ELF_OSABI
6162#undef elf_backend_want_plt_sym
6163#define elf_backend_want_plt_sym 0
6164#undef elf_backend_post_process_headers
a27e4371
RM		 6165#undef elf_backend_static_tls_alignment
6166
6167/* NaCl uses substantially different PLT entries for the same effects. */
6168
6169#undef elf_backend_plt_alignment
6170#define elf_backend_plt_alignment 5
6171#define NACL_PLT_ENTRY_SIZE 64
6172#define NACLMASK 0xe0 /* 32-byte alignment mask. */
6173
6174static const bfd_byte elf_i386_nacl_plt0_entry[] =
6175 {
6176 0xff, 0x35, /* pushl contents of address */
6177 0, 0, 0, 0, /* replaced with address of .got + 4. */
6178 0x8b, 0x0d, /* movl contents of address, %ecx */
6179 0, 0, 0, 0, /* replaced with address of .got + 8. */
6180 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
6181 0xff, 0xe1 /* jmp *%ecx */
6182 };
6183
6184static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
6185 {
6186 0x8b, 0x0d, /* movl contents of address, %ecx */
6187 0, 0, 0, 0, /* replaced with GOT slot address. */
6188 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
6189 0xff, 0xe1, /* jmp *%ecx */
6190
6191 /* Pad to the next 32-byte boundary with nop instructions. */
6192 0x90,
6193 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6194 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6195
6196 /* Lazy GOT entries point here (32-byte aligned). */
6197 0x68, /* pushl immediate */
6198 0, 0, 0, 0, /* replaced with reloc offset. */
6199 0xe9, /* jmp relative */
6200 0, 0, 0, 0, /* replaced with offset to .plt. */
6201
6202 /* Pad to the next 32-byte boundary with nop instructions. */
6203 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6204 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6205 0x90, 0x90
6206 };
6207
6208static const bfd_byte
6209elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
6210 {
6211 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
6212 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
6213 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
6214 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 6215
6216 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
6217 so pad to that size with nop instructions. */
6218 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 6219 };
6220
6221static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
6222 {
6223 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
6224 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
6225 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
6226 0xff, 0xe1, /* jmp *%ecx */
6227
6228 /* Pad to the next 32-byte boundary with nop instructions. */
6229 0x90,
6230 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6231 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6232
6233 /* Lazy GOT entries point here (32-byte aligned). */
6234 0x68, /* pushl immediate */
6235 0, 0, 0, 0, /* replaced with offset into relocation table. */
6236 0xe9, /* jmp relative */
6237 0, 0, 0, 0, /* replaced with offset to start of .plt. */
6238
6239 /* Pad to the next 32-byte boundary with nop instructions. */
6240 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6241 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6242 0x90, 0x90
6243 };
6244
6245static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
6246 {
6247#if (PLT_CIE_LENGTH != 20 \
6248 || PLT_FDE_LENGTH != 36 \
6249 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
6250 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
6251# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
6252#endif
6253 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
6254 0, 0, 0, 0, /* CIE ID */
6255 1, /* CIE version */
6256 'z', 'R', 0, /* Augmentation string */
6257 1, /* Code alignment factor */
6258 0x7c, /* Data alignment factor: -4 */
6259 8, /* Return address column */
6260 1, /* Augmentation size */
6261 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
6262 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
6263 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
6264 DW_CFA_nop, DW_CFA_nop,
6265
6266 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
6267 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
6268 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
6269 0, 0, 0, 0, /* .plt size goes here */
6270 0, /* Augmentation size */
6271 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
6272 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
6273 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
6274 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
6275 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
6276 13, /* Block length */
6277 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
6278 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
6279 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
6280 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
6281 DW_CFA_nop, DW_CFA_nop
6282 };
6283
6284static const struct elf_i386_plt_layout elf_i386_nacl_plt =
6285 {
6286 elf_i386_nacl_plt0_entry, /* plt0_entry */
6287 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
6288 2, /* plt0_got1_offset */
6289 8, /* plt0_got2_offset */
6290 elf_i386_nacl_plt_entry, /* plt_entry */
6291 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
6292 2, /* plt_got_offset */
6293 33, /* plt_reloc_offset */
6294 38, /* plt_plt_offset */
6295 32, /* plt_lazy_offset */
6296 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
6297 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
6298 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
6299 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
6300 };
6301
6302static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
6303 {
6304 &elf_i386_nacl_plt, /* plt */
6305 0x90, /* plt0_pad_byte: nop insn */
6306 0, /* is_vxworks */
6307 };
6308
64b384e1
RM		 6309static bfd_boolean
6310elf32_i386_nacl_elf_object_p (bfd *abfd)
6311{
6312 /* Set the right machine number for a NaCl i386 ELF32 file. */
6313 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
6314 return TRUE;
6315}
6316
a27e4371
RM		 6317#undef elf_backend_arch_data
6318#define elf_backend_arch_data &elf_i386_nacl_arch_bed
6319
64b384e1
RM		 6320#undef elf_backend_object_p
6321#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 6322#undef elf_backend_modify_segment_map
6323#define elf_backend_modify_segment_map nacl_modify_segment_map
6324#undef elf_backend_modify_program_headers
6325#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 6326#undef elf_backend_final_write_processing
6327#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 6328
a27e4371
RM		 6329#include "elf32-target.h"
6330
5a68afcf 6331/* Restore defaults. */
64b384e1 6332#undef elf_backend_object_p
5a68afcf
RM		 6333#undef elf_backend_modify_segment_map
6334#undef elf_backend_modify_program_headers
887badb3 6335#undef elf_backend_final_write_processing
5a68afcf 6336
eac338cf
PB		 6337/* VxWorks support. */
6338
6339#undef TARGET_LITTLE_SYM
6d00b590 6340#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 6341#undef TARGET_LITTLE_NAME
6342#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 6343#undef ELF_OSABI
a27e4371
RM		 6344#undef elf_backend_plt_alignment
6345#define elf_backend_plt_alignment 4
eac338cf 6346
23209a78
RM		 6347static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
6348 {
25e762b9 6349 &elf_i386_plt, /* plt */
23209a78
RM		 6350 0x90, /* plt0_pad_byte */
6351 1, /* is_vxworks */
6352 };
eac338cf 6353
23209a78
RM		 6354#undef elf_backend_arch_data
6355#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 6356
13285a1b 6357#undef elf_backend_relocs_compatible
eac338cf
PB		 6358#undef elf_backend_add_symbol_hook
6359#define elf_backend_add_symbol_hook \
6360 elf_vxworks_add_symbol_hook
6361#undef elf_backend_link_output_symbol_hook
6362#define elf_backend_link_output_symbol_hook \
9c72ff84 6363 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 6364#undef elf_backend_emit_relocs
6365#define elf_backend_emit_relocs elf_vxworks_emit_relocs
6366#undef elf_backend_final_write_processing
6367#define elf_backend_final_write_processing \
6368 elf_vxworks_final_write_processing
7dc98aea 6369#undef elf_backend_static_tls_alignment
eac338cf
PB		 6370
6371/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
6372 define it. */
6373#undef elf_backend_want_plt_sym
6374#define elf_backend_want_plt_sym 1
6375
6376#undef elf32_bed
6377#define elf32_bed elf32_i386_vxworks_bed
6378
6379#include "elf32-target.h"
GDB Binutils - Deliverables
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